What does Kamen-Hijiri mean? and what is Choujin?

Question:

what does this mean in Japanese

Answer:

Kamen (仮面) = mask
Hijiri (聖) = saint; hermit, Buddhist monk who goes on pilgrimage; Buddhist prelate

So Kamen-Hijiri (仮面聖) = Masked Saint, Masked monk etc.

Choujin or Chōjin (超人) = superman