Ones you have used, ones you are using, or ones you just have.
Human "Barbarian" Paladin of Bahamut:
Basically saw a dragon once and become obsessed with how strong they were and fell assbackwards into worshiping Bahamut.
Elderly Tiefling Wizard:
Up for anything, basically doesn't give a shit anymore, just wants to do illusion magic and parlour tricks and maybe help a few people if they can.
AMAB Enby Devil-Cleric:
Self-serving, sugardaddy is Asmodeus, or some other devil, they made a pact with in exchange for hrt and magic powers.
I really want to RP fantasy guy fieri as a dragon born bard/warlock.
Played tiefling warlock who made a pact with a gluttony demon/devil to get a job advertising junk food. Burning hands became Flamin' Hot™ XXXXtra Spicy Grab® etc, was great for a one shot.
Back burner chars include: a streetwise monk awakening from a medatative coma who was betrayed by his order and left for dead.
Willy wonka necromancer: come with me, and you'll see a world of pure reanimation!
Warforged cleric, uncertain of its origins and trying to figure out if they were created to worship or has chosen to worship on their own.
Teenage mutant ninja tortle one shot.
Goliath war-shaman, wild magic or zealous barbarian on a pilgrimage to solve his tribe's declining birth rate. Barbarians fucking rule if you play them as more than an angry dude who likes to hit things.
Plane-stranded horizon-walker/rogue.