Nor is he the real Thor!
Confused, True Believer!
Well, read on and all will be made clear...probably...
This version of Thor would run from Weird Comics #1 (this appearance) to #5, never once making the cover.
Interestingly, issue by issue, he lost elements of Thor's costume (including the helmet, cape, and long hair), until by his final appearance in #5, he just looked like Grant Farrel in a blue swimsuit!
After that, he disappeared until 2008, when he, and an assemblage of forgotten Golden Age heroes, popped up in Savage Dragon #141, in full "Thor" regalia.
We'll be posting the other four adventures of the first Thor over the next few weeks.
Watch for them.