This is getting pretty long, so collapsibles.

Gaudium is the god of joy. He is generally depicted as a rotund man with a cloak that changes colors, each color having its own meaning. His sigils are rather commonplace, the color of the sigil celebrating the meaning of the corresponding color of Gaudium's cloak:
[collapse=Gaudium's colors]
[color=red]Red[/color] is love, both brotherly and romantic. There will [i]always[/i] be a red sigil at weddings
[color=orange]Orange[/color] symbolizes games, theater, and anything else created solely for entertainment. Also on betting chips.
[color=yellow]Yellow[/color] embodies power and excitement, be it the rush of combat or the thrill of discovering something new. His paladins are marked by yellow emblems
[color=green]Green[/color] is a subtly joy, that of being safe and content. A favorite of nurseries and insurance salesmen
[color=blue]Blue[/color] represents dreams, meaning both sleep and hope. Pray to a blue symbol when you're feeling down
[color=purple]Purple[/color], last of all, celebrates art and creativity. Gaudium wants people to stop putting these in torture chambers.

For each color, there is a high priest(ess) with a holy relic relevant to the color's meaning:
The [color=red]High Priestess of Love[/color] has the Stone of Gaudium, which allows the user to force a person to feel any sensation or emotion to any intensity
The [color=orange]High Priest of Entertainment[/color] has the Mask of Gaudium, which allows the user to take any form, human or otherwise, clothes included
The [color=yellow]High Priest of Excitement[/color] has the Gauntlet of Gaudium, which makes the wearer never tire, physically or mentally
The [color=green]High Priestess of Comfort[/color] has the Cloak of Guadium, which stops anybody enveloped in it from aging or being injured.
The [color=blue]High Priestess of Dreams[/color] has Gaudium's Dreamcatcher, which allows the holder to grant a single wish to anybody they meet
The [color=purple]High Priest of Creativity[/color] has the Brush of Gaudium; whatever you paint with it comes to life
When used properly, the holy relics can bring great joy to the world. But should they fall into the wrong hands, they could be used for great evil. Because of this, they never leave the side of their respective priest(ess).

Continuing on the color theme, as Gaudium is so fond of the beauty of colors, there are two more that are relevant: Teal is the color of the initiate; those on a pilgrimage to prove themselves are tattooed with teal sigils. Once they complete their mission, the sigil turns a shimmering silver, marking them as an official priest of the god of joy. Should you fail your pilgrimage, or otherwise attempt to give yourself a false silver sigil, it will burn itself away, leaving a scar in the shape of the symbol that can only be healed by a great act. Those bearing the mark of the fallen are forbidden from entering Gaudium's temples. On the bright side, Gaudium is pretty loose in what constitutes as "failing", since he understands people can mess up or have bad days; really just don't go kicking any puppies or burning down any orphanages on your way and you'll be fine.
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[collapse=paladins]
While on the subject of pilgrimages, about 2/3 of the people that take them are Gaudium's paladins. Paladins of Gaudium are often those who love the thrill of battle, and generally use axes, hammers, and daggers; Gaudium prefers them as they they can be used as tools as well as weapons. Paladins are encouraged to exact vengeance on anybody abusing others, as well as enjoy the finer things in life themselves, such as good food, alcohol, and sex. Note that just because something is pleasurable for one, that doesn't make it okay if it means harming another, and rape is one of the worst sins one can commit. In the end, they go after pretty much the same targets as any other paladin, but overall are a lot less stuck-up. The biggest thing that separates a paladin of Gaudium from other paladins (aside from not being celebate) is their fighting style. The traditional model of paladin has them throwing themselves in front of enemy attacks, taking all the aggro onto themselves so that their allies are free to attack. You ever tried getting hit by five enemies at once? No matter how good your armor is, it's not exactly pleasant. That's why the Gaudium paladins taunt the enemies to take on the aggro, but then focus on dodging their attacks, aided by their minimalist armor. A good paladin will take 20 hits. A good paladin of Gaudium will narrowly avoid 20 swings.
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[collapse=magics]
Be a good enough follower of Gaudium and he'll give you some magics. Here's some of the most common, unless stated otherwise, anybody who worships Gaudium above all others is able to have access to these, if they're pious enough:
>different levels of healing spells, ranging from paper cuts to missing limbs in terms of what they restore. Leaves no scars, but can't be used if the wound already healed naturally. Priests can use these at range, paladins require skin contact with the target
>Smooth scar: Smooths over a single scar; requires contact with the target scar
>Pain immunity: Target becomes unable to feel pain for 30 minutes. Ranged priests, melee paladins
>Virility: If used on a male, makes sure to impregnate any females of any compatible species they have sex with. If used on a female, makes them sure to be impregnated by any males of any compatible species they have sex with. Lasts 24 hours
>Sterility: The target becomes completely sterile for 24 hours. Essentially a magic condom. Sterility and Virility cancel eachother out
>Holy light: Generates a ball of light equal to a 50 watt light bulb that lasts for 15 minutes. The ball is controllable by the caster. Reserved for priests
>Smite Evil: upon skin contact with target, deals damage proportionally to how "evil"(according to Gaudium) the target is. Reserved for paladins
>Holy disco: Generates a ball of light that changes color every second for 15 minutes before disappearing. Is shot out like a bolt and sticks to the first thing it hits
>The ability to turn water into wine
By default, priests and paladins are immune to disease and infection, though poisons still work.
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[collapse=bards]
Though, of course, the class that best represents Gaudium, is the bard.
Bards have a reputation for not being picky about who they share their love with: elves, orcs, dragons, golems. Everything is fair play for a bard, thus satisfying Gaudium's red to the fullest possible extent. More literally defining the bard is musical talent. Be it with an instrument or singing, both are constructs of entertainment, orange in Gaudium's pallet. Yellow is accomplished by the bard simply doing their job and joining an adventuring party, as most people would agree that dealing with a dungeon full of traps is enough excitement for one day. The next color is what truly separates a regular bard from great bard: the green of comfort. A good bard will not just fight and be merry, but diffuse any bad situations and aid the whole party in unwinding after a stressful day, and not just in bed. When the camp is set up and everybody's still on edge from the dungeon caving in, a nice, soothing song can be all it takes to get everybody to settle down. And finally, we have creativity, represented by purple, which goes hand in hand with the bard's musical talents. True, the majority of a bards repertoire is handed down through generations, but they should still strive to create songs and stories of their own. Even in combat situations, since the bard doesn't excel at any single thing in particular, they have to think of how to combine their various skills and be resourceful.

Though there's no such thing as being officially inducted as a bard of Gaudium, he still has many gifts for them, even ones that primarily follow other gods:
>Inspire: A classic bard spell. Through the use of music, the bard fills their team with courage and intent, making just about everything they do a bit better
>Power Chord: A single note so beautiful it hurts... all enemies who can hear it. Only minor damage, but pretty wide aoe. Allies aren't harmed, but still appreciate it.
>Stunning beauty: A short melody so touching that even the most heartless of evil-doers pause to shed a tear.
>Wind Whisper: The next single sentence spoken by caster is carried on the wind to any one person anywhere in the world. Doesn't offer a method of reply though
>Sparkler: Spawns, essentially, a roman candle at target location. Good for adding flare to performance, usable as an actual flare, or for calling somebody out as a liar.
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[collapse=the afterlife]
Those faithful to Gaudium are rewarded in the afterlife with eternal paradise. This paradise is essentially your own little universe where you are in complete control of everything and you get to play god. Say you want to chill with your bros in the afterlife, some of which are dead, others are alive. Well you can summon up copies of them and hang for thousands of years. Say you want to eat a world made of glazed donuts. Go and spawn a donut world then. Say you want to brutally murder your former loved ones. Nothing's stopping you from doing that here. You see, as extra incentive to get people to behave in this world, Gaudium put no limits in his reward for the next one. If you think you'd enjoy beheading cats and bathing in the blood of the innocent, just hold off for a bit. Live your life as a helpful, friendly person and make life better for those around you, then when you die you can enjoy your massacre for all eternity, and you won't even have to deal with any pesky law enforcement or anything!
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[collapse=sex]
Sex is revered by Gaudium; it is the act by which life is created, and one of the most pleasurable experiences one can have. This is an oft-quoted text from one of Gaudium's holy scriptures, and it's true. It's what makes people see him as the lust-driven god of whores, but also what keeps his follows from having non-consensual sex. When you rape somebody, you are not just defiling your victim, you are defiling Gaudium's most sacred act.

Quite possibly the biggest thing keeping people from accepting Gaudium is that he doesn't believe in age or species limits If you want to have sex with a child or animal, and the child/animal is fine with it, then he's fine with it too. In Gaudium's eyes, yes, children and animals CAN consent. If a child is old enough to feel pleasure and to say yes, then they can consent. Animals you have to be more careful with due to the fact that they cannot speak, though if the animal is putting up any sort of fight, it's safe to assume they don't want it and you should back off. If they decide partway through that they don't like it, then back off. Yes, even if you were enjoying yourself, even if they agreed; if they back out, then pull out.
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[collapse=being a follower]
Decided you want to convert? Great! Gaudium is always looking for new acolytes. Here's some basics on worshiping Gaudium:
1) Praying. Some religions clasp their hands, others bow, Gaudium's one requirement for praying is that you smile while doing so. Oftentimes this makes it hardest to pray when you need to the most. Though generally, when it's hardest to smile is when one needs to smile the most
2) Division. Some people choose a primary color to follow, others don't. If you feel a certain attraction to one color more than the others, you should explore it, but don't limit yourself. Even the high priests and priestesses enjoy colors that they aren't the head of
3) Sex. You are not obligated to have sex. You can have (consensual) sex as much as you want, but if you want to wait until marriage and only have sex with your spouse, Gaudium applauds you, for even though you're having sex less often, each time means so much more
4) People will worship other gods. Deal with it. You can see about talking them into converting, but it should stay at talking. Don't resort to violence and there's a point at which you should give up and leave them be. Seriously, we can't stress this enough. You ever read the bible? How one of the ten commandments is "do not kill"? And then there were the crusades where people started holy wars to convert others to Christianity and used god as an excuse to kill anybody they didn't like? Gaudium wants people to enjoy life, and if people enjoy worshiping other gods then let them.
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[collapse=Seriously though]
WARNING: PHILOSOPHICAL CONTENT
[collapse=A Joy-Based Society. AKA Creating a Utopian Playland]
Imagine, if you will, a perfect society. Go on, in your head, picture it. A world where everything is perfect. The people there, are they happy? If not, is the society truly perfect? You don't generally think of it, but better societies have proportionally happier people. If a society is failing, then people aren't happy. Even if some are left out, numbers-wise, the best societies are the ones with the happiest people. Gaudium proposes that the main goal of any society should be to ensure the happiness of its citizens. One may think that with too much emphasis on pleasure, the important things will be neglected and society will crumble, but this is self-correcting. How happy would people be if say, stores stopped stocking shelves? They wouldn't be, and so to ensure the happiness of its citizens, the shelves would have to be stocked. This would require people to work, which would cause them to be less happy, but still happier than they would otherwise be had nobody done the job. You can make some people happy all the time or all the people happy some of the time, but you can't make everybody happy all the time. That said, by having each decision made with the thought process of "what would make the most people happy?", theoretically one could make the perfect society.
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[collapse=Why Rape isn't Okay. AKA The Numbers Game]
At a glance, you may think the whole obvious "because it's a sick and twisted act", which is true, but thinking about things objectively with the thought process of "what would make the most people happy?" it becomes a neutral event: one person made happy, one person made unhappy. Add gangbangs into the mix and now you got 5 people's pleasure for one person's pain-truly a good thing, right? Here's the thing though, by committing this act, you imply that you are able and willing to do it more times. Then the numbers change. One rape is net neutral: one happy, one unhappy. Do it again and you get one happy, two unhappy. Suddenly it just became negative. Gangbangs follow suit, you get five people together and over the course of a year commit six rapes together and now it's objectively bad. Beyond that there's a sense of scale to things. Sex is revered by Gaudium: it is the act by which life is created, and one of the most pleasurable experiences one can have. Rape often inflicts psychological damage to the victim, rendering them unable to enjoy sex. So for your hour of decent physical pleasure, you just ensured somebody a life of intense psychological pain.
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[collapse=Is Killing Okay? AKA The Paladin Gray Area]
Gaudium is a little vague on his thoughts on the death penalty. On one hand, the robbing of one's life keeps them from experiencing any more joy. Permanently. In theory this makes the act of killing anybody infinitely bad in the eyes of a joy-based society. However, what if the person was evil and would never change their ways? If the person you kill would kill two people a day, every day, then the numbers game means you're indirectly saving the lives of those people and thus allowing them untold joy. But the secrets of the mind and future are locked deep away. If you caught a criminal and told them not to do it again and let them go, they'd act good for all of the five minutes it took to get out of your sight, and then they may or may not start committing crimes once more. If you caught a criminal and had your sword at their neck, what would they say? They'd beg for their life and claim that they'd never commit a crime ever again. At the time, it may even be sincere, but they've already proved themselves willing and able to commit the crime, and there's always a risk they'd go right back to it. You could simply kill them then and there. Assuming they were actually sincere, the gods will be able to tell, and they will send him to his reward, where he will be treated better than an ex-criminal would've been treated in our world. Meanwhile if he was only trying to save himself, the gods will be able to tell, and they will send him to his punishment. The problem is that this can be used as an excuse to kill literally anybody. They were good? Oh, I was sending them to their reward. Gaudium chooses not to get involved with this mess, and leaves it up to the individual whether or not somebody deserves to be killed for their misdeeds. Bare in mind, though, that a paladin who chooses to repeated kill people who aren't truly far beyond saving may find their powers weakening. A death sentence isn't something that should be given out lightly.
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If you're told a baby will grow up to be the king of demons, assume they're lying and move on. Even if that child has horns or whatever, it still might grow up on the good side. Don't kill it. If you end up forced in no-win situation like "go kill ten townspeople or else I kill your team-mate", Gaudium won't judge your decision.