What are the standard fantasy races like in your setting?
Dragonborn: Spawn of Bahamut who crashed into the moon while on his way to fuck up Tiamat who lives at the planet's core. Dragonborn eggs just kind of fall from space every now and then.
Dwarf: Used to be Tolkien Dwarves, but they dug too deep and unleashed the Dragonpocalypse. Now they're nomad merchants.
Elf: Fey Humans. Super adaptable to any environment allowing for a shitton of sub-races. Blue Sea-Elves, Green Forest Elves, Poison resistant Swamp-Elves, etc.
Gnome: Fey Dwarves. Hate Kobolds which are pretty much just dragon-corrupted gnomes.
Halfling: Basically Kithkin. Branched off from Humanity.
Half-Elf: A bunch of them started their own nation and are kind of like fascist Hylians.
Half-Orc: Tieflings got demons to breed with goblins and make Orcs to serve as soldiers for their civil war. Orcs fucked Humans.
Human: Assholes.
Tiefling: Diabolist Romans (used to be Human) whose Atlantis-like home got destroyed by civil war. Now they're pirates.
Bonus Races
Warforged: CHAPPiE. Left over AI from before Tiamat crashed into the planet and destroyed society.