Board Thread:General Discussion/@comment-24111700-20141009211853/@comment-24152851-20150116121307

Swampfire + Big Chill = Swamp Chill - mastery over fire and ice, as well as regeneration, super strength, flight, tangibility, temperature tolerance, plant telepathy.

Also probably a smart alien combined with a strong alien, like Humungousaur + Brainstorm = Humungoustorm.

Or maybe the size altering alien who can either grow larger or smaller, but not both: Nanomech + Humungousaur = Nanousaur.