Board Thread:General Wiki Discussion/@comment-5486221-20151231012039/@comment-3096633-20160205194934

Ultra3000 wrote: Okay, so Wildmutt, Ripjaws and Ghostfreak are out of the Original 10. I never expected that one Ultimate Alien alien would be part of the Original 10, but it has given me hope that more sequel aliens will appear. Though the chances of Big Chill appearing, with the new design for Stinkfly and the possible inclusion of Arctiguana later on, seem unlikely. Since Ben has Heatblast and Wildvine, there's no need for Swampfire either.

I think the only reason why ripjaws not being the new original 10 in the reboot because of his practicability.