Javit Yeddim aka Lost Knowledge

Blindspot's Jane Doe(Jamie Alexander) and John Doe(Dominic Purcell i.e. amnesiac) in personality, in body he's a mix of Sherlock Holmes and Fox Mulder(tall, spare)

"Do you even know, what you don't know? Does it matter?"

"What matters is what you do with the knowledge, secret man."

"Funny."

"No, I meant that in a serious way, your lack of knowing your identity, but knowing all about these other unrelated things, this is useful, provided we get authorization from higher up to do something about it..."

"Argh, but it is so frustrating!"

"I know, it's almost like a newly exalted, except both your souls lack knowledge of recent events, but not of how to use your powers. Someone messed with you in a very intricate, specific way. Not unlike Xaos, but we know The Wyld and the fair ones are what did that to him."

"Ugh, my head."
"What's happening?"
"I got a splitting headache, like everytime I learn something new."