Thread:Titanollante/@comment-25285745-20151013040840/@comment-25285745-20151013170723

Gamera 2: Attack of Legion is definitely the most common title I've seen in U.S. releases, but some recent ones use Gamera 2: Attack of the Legion. The English title that is used in Japanese releases currently is Gamera 2: Assault of the Legion, while in the past it was Gamera 2: The Real Guardian of the Universe.

As for Gamera 3, I think Toho Kingdom might be behind the popularity of "Irys." I remember their page for the film being titled Gamera 3: Incomplete Struggle and their monster bio for Iris being spelled "Irys." However, they recently changed the page name to Gamera 3: Revenge of Iris and now spell the monster's name as "Iris."