Newer scans for the other Metal Heroes that will appear in Kamen Rider x Super Sentai x Space Sheriffs: Super Hero Taisen Z has surfaced online. The new scans also confirmed that the Metal Heroes that will appear in the movie are just Gokai Changes!
In the movies, the Gokaigers will use Metal Hero Keys to transform into the following heroes: Janperson, Jiraiya, Jiban, Draftredder, Blue Beet and B-Fighter Kabuto. As for which Gokaiger will use what key, it is still unknown as of this writing.
Image courtesy of J-HERO.