Sure, D&D’s tieflings are great, but Pathfinder’s tieflings are where it’s at. Because Pathfinder remembers that fiends aren’t all the classical “red dude with horns and hooves” types. Fiends get weird, and so do tieflings.
Most Pathfinder tieflings do follow the standard model, but certain ones have more pronounced traits from specific fiendish ancestors. Some of them, like the pitborn (descended from demons), hellspawn (descended from devils), and spitespawn (descended from corrupted genies called divs) pretty much fit the standard mold with a couple minor alterations.
But some of them are a bit different. The hungerseed (descended from onis) look sorta like fiendish orcs, the beastbrood (part rakshasa) have animal traits, and the shackleborn (descended from kytons) look like blue people covered with scars.
The faultspawn (descended from fiends called asuras) tend to look rather normal, like androgynous humans except for forged tongues and sharp teeth, but the foulspawn (descended from demodands) have sharp teeth, black eyes, and some physical extreme like being incredibly fat, skinny, tall, or short. The grimspawn (descended from daemons, Pathfinder’s nihilistic equivalent to the yugloths) basically look like Gollum.
But then things get real weird, and real disturbing, with the final tiefling variant, the motherless. They’re children of horrific proto-demons called qlippoths (equivalent to D&D’s obryriths), and get their name because they eat their way out of their mothers.
Yeah, they’re real freaky.
They have similar variation for aasimar, which is pretty neat too.
The reason you’re great at one-off compositions but can’t put a long-form comic or animation together to save your life isn’t because you’re a lousy artist, it’s because you’re a lousy project manager.
I know that doesn’t sound particularly positive, but you’d be astounded how many artists I’ve run into who are literally unaware that project management is a) a totally separate skill set from being Good At Art, and b) something you actually have to learn - they think that people are just intrinsically good or bad at doing long-form projects and that’s all there is to it.
Correctly identifying what it is that you suck at is the first step to improving!