A bard inspired by Le Pétomane, the Fartiste. Capable of drawing air into his bottom, he learned to use this talent to imitate musical instruments and barnyard noises, among other things. From Wikipedia:

Some of the highlights of his stage act involved sound effects of cannon fire and thunderstorms, as well as playing "'O Sole Mio" and "La Marseillaise" on an ocarina through a rubber tube in his anus. He could also blow out a candle from several yards away.

I haven't put a lot of thought into the mechanics of building a character based on him, but the idea always crosses my mind when I consider a bard. 

Sigh...
I somewhat like my worst character idea. Makes for some interesting encounters. It's just...so stupid.

A halfling who is a chef. Will do anything, kill everybody in the world, just to set up a bakery or restaurant or café. He is willing to sacrifice everything to leave a review on his favourite buttery scone shop. He is willing to commit multiple crimes if it means he can get a discount on an imported wheat delivery.
Anything in the world, he will sacrifice anything, do anything, kill anything, as long as his goal is related to food.
Also he's a wizard, so he uses fireball to bake his pastries.

I also have another stupid one.
The Goldric-Cavendish 2000, an autognome originating from an unknown realm with the sole purpose of entertaining people. He's a bard, and his lungs are an accordion, so he basically has -10 in Stealth (breathing is as loud as speaking for him). I haven't actually used him in any campaigns yet but it seems like he could bring about some interesting encounters.

Quote from EricHVela >>

Creating a character name and, then, trying to fit a character to it...

Some people seem to be able to do it, but I wonder if they already have a character in mind when thinking of a name.

I didn't have anything ready for creating Morgan, the Maladjusted Minotaur Monk. He was bland. I couldn't get into any character for him. As if I didn't learn the first time, Borf, the Belligerent Bugbear Bard wasn't any better.

Now, I stick to random generators after creating a character unless the character was born under prophecy or named by ritual. Parents usually pick names without any clue what the kid will become. 

For me, names come before ideas. When people ask me why I have so many characters, I say that I didn't want to forget some cool names that I thought of. Examples:

• I randomly thought of the name Alister Tinsel and knew he had to be used for a Christmas one-shot. He ended up being a gnome cleric who lived in some snowy forests.
• This sounds ridiculous, but I had thought of the name d'Vynkee g'Reyn-iye (pronounced da-VIN-kee GREEN-eye) and just had to turn it into a character. I deliberately made it sound like da Vinci because I thought it would be funny to play an artist. Fast-forward, he's now a Grung Drakewarden whose drake is called Fizzle. d'Vynkee loves painting in his spare time.

Usually, this helps me think of more creative (and sometimes stupid and silly) character ideas that would be more fun to play.

A necromancer who is afraid of dead bodies.  

  A charismatic Aasimar named Dall who insists on sketching everyone she meets. The sketches themselves are accurate enough to be recognizable but always have some horror element, like a tiny arm reaching out from the nostril or an oozing stitched sore where am eyebrow should be. People often feel angry or uncomfortable about their sketch, which Dall encourages them to accept, and she is too persuasive so they end up taking home the sketch despite their discomfort, which leads to the being ridiculed by fam or friends, further increasing their unease.

Imagine this, A dwarf self conscious about their height. They are a wizard who specializes in wind magic so he can lift himself up and look taller. hes short even for a dwarf and struggles with bullying. 

A bard inspired by Steamboat Willy. He doesn't play instruments, he plays whatever happens to be on hand, including animals. His vicious mockery is him opening the mouth of his opponent and rattling its teeth like a xylophone.

A bard named Ozzy who has a Giant Bat sidekick.

Quote from TWForgeCleric >>

A necromancer who is afraid of dead bodies.  

 Simple, but extremely entertaining.

A Plasmoid who can’t maintain their shape; so they use the Artificer “Armorer” subclass as a mold so they can move around.

As they lose HP; the steampunk-esque suit hisses as air escapes from the pressurized armor; and the Plasmoid “bleeds” from the wound until the suit stabilizes.  

Every time the suit is mortally damaged (represented by being reduced to zero HP), the Plasmoid spills entirely out from the armor in a puddle; until healing restores them enough to climb back inside.

Quote from Tony1Adobe >>

A Plasmoid who can’t maintain their shape; so they use the Artificer “Armorer” subclass as a mold so they can move around.

As they lose HP; the steampunk-esque suit hisses as air escapes from the pressurized armor; and the Plasmoid “bleeds” from the wound until the suit stabilizes.  

Every time the suit is mortally damaged (represented by being reduced to zero HP), the Plasmoid spills entirely out from the armor in a puddle; until healing restores them enough to climb back inside.

 I am actually hoping to play this character in my next game. Sort of styled on Johann Kraus.

I had the idea for a half-orc wizard because yes. I made a gnome barbarian with a high INT because it was funny. And I made a dragonborn rogue.

 I also made a 2 foot 7 gnome that is completely convinced that he isn't short, and refuses to accept it when others tell him that.

His quote is "I'm not short! Everyone else is just really tall!"

a water genasi or triton that cant swim but wont admit it because its embarassing. "I can swim I just dont want to" or " I can swim its just not fun/good for me"

Quote from The_Summoning_Dark >>

Quote from Tony1Adobe >>

A Plasmoid who can’t maintain their shape; so they use the Artificer “Armorer” subclass as a mold so they can move around.

As they lose HP; the steampunk-esque suit hisses as air escapes from the pressurized armor; and the Plasmoid “bleeds” from the wound until the suit stabilizes.  

Every time the suit is mortally damaged (represented by being reduced to zero HP), the Plasmoid spills entirely out from the armor in a puddle; until healing restores them enough to climb back inside.

 I am actually hoping to play this character in my next game. Sort of styled on Johann Kraus.

 Funnily enough, while I was pondering this Plasmoid concept, I remembered that character from the Hellboy: Golden Army movie.

Awakened donkey. His name is Donkey.

He has fell in love with Tiamat and goes on quests to find tresure to sacrifice to her. He has cleric-like abilities from all of his worshipping, so he can heal people.

The healer of the party is a LITERAL DONKEY.

That is one of the funniest things I have ever heard XD

human cleric with zealot mindset who follow scriptures from his cult leadership and would easily deny some specific events (depend from campaign) which happening to party+cleric but otherwise are uncommon to regular folks,  all just because cult leadership state those events impossible, and periodically hitching rest of party in style "how could you be so superstitious to believe things you describing are possible? lol"

so basically i wanted cleric contradicting even his own experience at least for part of adventure, kind of like 5e version of mindset shown by T'Pol from Star Trek:Enterprise when things go to time travelling topic

decided to axe that concept even before joining campaign, because i not consider myself strong at RP to make it look good, likely required bunch of work with dm with changing worldbuilding for specific rare event repeat periodically, basically could be disliked by other party members since it's RP not scripted series

its my worse because it had a major design flaw, a monk who's arms were cut off and he attacked tru kicks

My characters greatest enemy was ladders and ropes, one time while being chased we had to climb a ladder to escape our pursuers, the rest of the party claimed it fine and i was unable to, so i had to bust a nearby window and fell 300 feet and only survived because of my monk slow fall

my character eventually died due to him not having arms, he died running from a group of poachers and my movement speed was more than fast enough to escape, however i got super low rolls on a perception and dexterity check and stepped in a bear trap along with another party member, the other party member was able to get out in time and attempted to help me escape, but he was a wizard and was barely able to escape himself and my character was able to break 1 of the poachers skulls with a strong kick to the side of the head but then died because the wizard came back to save me and casted fireball killing me and the rest of the poachers