Human to start with. Thinking of Demon-spawn Tiefling for later, but kind of waiting to see how the evolution words.
Class=Bloodrager: Abyssal Bloodline
Jakob is a solidly good guy, but there is darkness. Whatever it was they injected him with has produced some chilling changes in him. Now, when danger threatens, he can tap into his enhanced body chemistry to fuel a rage that makes him far stronger and tougher than he is ordinarily.
When he draws on it, his body actually changes. The bones in his fingers strengthen and sharpen, forming fierce talons.
(At 1st level, you grow claws while bloodraging. These claws are treated as natural weapons, allowing you to make two claw attacks as a full attack, using your full base attack bonus. These attacks deal 1d6 points of damage each (1d4 if you are Small) plus your Strength modifier. At 4th level, these claws are considered magic weapons for the purpose of overcoming damage resistance. At 8th level, the damage increases to 1d8 points (1d6 if you are Small). At 12th level, these claws become flaming weapons, which deal an additional 1d6 points of fire damage on a hit.)
As his control over this biochemical rage deepens, he finds he is able to cause even deeper changes in his body.
At 4th level, when entering a bloodrage, you can choose to grow one size category larger than your base size (as enlarge person) even if you aren't humanoid.
Spell choices would be examples of further control. Mostly self-buffs, possibly some attacks that could be explained a psychic manifestation of the dark, biochemical fury within him.
