A dagger/knife specialist.
A full-blown smartass. Nothing more, nothing less.
His specialty is, of course, knives and daggers. He prefers daggers, though, as they are sharp on both sides, instead of just one.
Jake is good at throwing knives and CQC with Daggers.
He also has a mystical ability to retrieve his blades from where ever they are, and to transform any object into a knife of the same substance. (I.E. He can turn a beer bottle into a glass dagger of the same color.) The change in size depends on him. But the bigger the object, the more strain it is on him. If something is made of more than one substance, then the knife will resemble both, but would mainly be concentrated on the strongest substance.
I'll develop this as I go. I'm not much for details.