Board Thread:Lore Discussion/@comment-11458474-20130926235435/@comment-25109952-20130927174124

Gandalf is a Maiar, which means he is superhuman in every aspect, so he is a 'wize and old warrior', as he is a warrior in ways.

Not to mention he is refered to by Saruman as 'Gandalf Greybeard' in one of the films.

And he has a greybeard.

And the Greybeards in Skyrim are more wizard than warrior.