Thread:Monolith616/@comment-3406131-20150417222318/@comment-26066818-20150907214631

It's actually A-Z #6, not #5. And no, it's not just Ott. The entry basically says ANY race claiming to be Martian might not actually be from Mars. It starts off with "the planet has reportedly been used as a base for literally dozens of alien races". Hedging language like "alleged", "it is believed", and "by some accounts" is used for virtually every reference.

It's separated into a section on stories that took place ON Mars, and a section on aliens who came to Earth and were identified as Martians. That second section begins "In addition, there are numerous accounts of "Martians" on Earth, and it remains unconfirmed whether all of these aliens had truly colonized Mars, whether the aliens lied, or whether they were referred to as Martians as a euphemism for alien invaders."

Essentially, the Handbook does not take the position that any "Martian" group that ever appeared in Marvel Comics WAS actually and definitively Martian.