Somebody unknown and that will make Himmler look like a pussy.
A replacement for Comey...
Somebody high up on the inside of the FBI who has been a “white hat” feeding Trump inside information on the dirt there...
Himmler was a pussy. If you're speaking in terms of Nazis --something i find to be a bit disturbing-- you'd go for either Otto Skorzeny, Reinhard Heydrich, or Ernst Kaltenbrunner.
Those guys were truly frightening, capable, and ruthless (even by Nazi standards).