First up is Bart Allen gottarunnow. The young man is the speedster from Smallville (think Flash's Barry Allen but a bit younger, more laid back, far more implusive, and sooo much faster XD). Bart was a superhero back home, working with the Justice League and saving the world, yet he decided it was time for a new change of scenery.
Next up is Spike bloody_billy from Buffy the Vampire Slayer/Angel. Spike is a vamp with a soul, and is newly made flesh again after having sacrificed himself to save the world.
Last but not least is Krieg rendtheflesh from Borderlands 2. Krieg is/was once a hero and vault hunter until an evil Corp captured him and his family. Long story short; tons of bad happened and he became and insane killing machine...but has recently been restored to some semblance of his old self. The crazy part/persona is more or less locked away inside his skull, and hopefully will stay there. :)