Speaking of RPM, I happened to pick up a few packs of the Power Rangers CCG that Bandai just released (they were at Wal-Mart here). They have Go-On Red on the packaging, and I actually ended up snagging a rare holographic (or whatever it's called) version of Engine-O. They're calling it "Engine King." I don't know if that's the official name for it, or if Bandai just made up a name just to release the card, but I thought that was kind of interesting.
Here's a scan of the card in question, hope this link is okay... @.@
http://henshinjustice.com/wp-content/up ... an0003.jpg
I haven't gotten the Go-On Red card (which I'm sure will just be called "Red Ranger" on it), so I don't know anything about that. It'd be interesting if they did actually call it Engine King in the show, it'd be a first for them to drop the "Megazord" label.
Of course I wouldn't just put it past Bandai to have the info on this card wrong...I already have a card of the original Megazord labeled as "Mega-Dragonzord" and the White Tiger Warrior Mode labeled as "Mega Tigerzord."