So my friend and I are making goblin characters. And we are having a blast. Please note that the other characters will have no idea what we're playing until the game actually starts and our characters are introduced, probably eating something we shouldn't be.
I'm building a goblin rogue and he is building a goblin barbarian. We both worship our made up god, Grumgosh who has a pet kitty named Zurg. The god isn't really in the world, which makes it that much more fun!
The barbarian, Anklebiter, fancies himself a cleric and will run leaping head first (literally) into combat to latch onto people with his bite attack, in Grumgosh's name of course. He'll be constantly eating disgusting things especially dogs because they're unholy, chewing on one of the party member's boots and going into rage for any situation which calls for "panic," i.e. blind, dazzled, confusion, set on fire, not really set on fire but thinks he is, etc. etc. (fairy fire - "I'm on fire! When I'm on fire, I PANIC! When I panic, I RAAAAAAAAAGE!!!" *begins running around attacking without regard for himself*) One of his catch phrases will be, "Cuz Grumgosh wills!"
The rogue, Kneeknocker, will be forever hiding from everyone, cuz he can. He may go into the witch class or summoner or something to get arcane spells and a pet (probably a kitty cuz they're holy). He doesn't use bladed weapons, "Cuz they're sharp and I hurts myself." He will also meow occasionally and get the ventriloquism spell to seem like he's somewhere else. He will dual wield a heavy mace and a light mace and will wait for Anklebiter to grapple before attacking so they will "Let my brover go! GRUMGOSH WILLS IT!". Or he will yell "SNEAK ATTACK!" during the second round when attacking an enemy by himself.
They also constantly fight over who's the better cleric of Grumgosh.
I want to open this up to the community (my DM and player base doesn't read the forums) to help us with other suggestions for roleplaying quirks and all kinds of fun to be had.