Isn't there an official name for this Hiker? I believe in the English version it's "Dave", but I'm unsure in other languages. Was it just left as "Hiker" for other languages?

Sanketsu said:

Isn't there an official name for this Hiker? I believe in the English version it's "Dave", but I'm unsure in other languages. Was it just left as "Hiker" for other languages?

Yeah, but all Hikers do look the same.
Just imagine that there are multiple Hikers in this picture.

I guess we should leave it just Hiker.