Is there only german zombies in nazi zombies?

Yes there is, He appears at level 99 and is very difficult to kill. And the answer for intelligent people is no, Hitler is not a zombie in nazi zombies without some kind of hack for PC which means is...

You don't becoming a Zombie is not part of the designed game

Actually the imperial army is Japanese soldiers at Shi No Numa so yes there is japenese zombies, its just kind of hard to tell.

The Hitler zombie doesn't exist. Full stop Well, I know this is unbelievable but yes there is one! If you a series of events in the right order during rounds, if you play in Nachet Der Untoten,...

Sorry but no, unless you have a pc. Then mods and cheats can give you the ability to be a zombie, but you still do every thing else normal.