I really love Rhunal and Bron from @Berserker's the Turbulent March. Rhunal shows good character growth and is an overall interesting character.
I also really like Daiden and Aelius from @LostSpirit's Curse of the Immortals. They are complicated and have depth. ^u^
@MeltingCORE has a cast of very charming and likable characters in Red Shift.
And @rajillustration has plenty of colorful characters and is very good at letting you know their personalities from a few lines of dialogue which I really like.
And many more! (but for some reason Tapas isn't letting me tag them right now LOL)