History teacher

He tells the past as if he were there himself. No ...

Just Shredder.

I thought there weren't enough Shredders here, so here's another one that should basically...

Your father

A quiet and formidable warrior who has forgotten about the war for the sake of the only one he is afraid of ...

You're his assistant.

(I just hope it works fine. Also, potential ladies, forgive me, I just don't know how to spell it without using you...

He stumbles upon your father's hunting shop.