(the forms you have there are the first one is rookie, that's right, Keramon. But his champion is actuallym<a class="postlink" href="http://digimon.wikia.com/wiki/Chrysalimon">http://digimon.wikia.com/wiki/Chrysalimon</a>m. Then Ultimate is Infermon and Mega is Diaboromon that last pic you got. In the movie he skipped champion and jumped straight to ultimate. His champion form is shown in Digimon Data Squad, season 5 of digimon.)