Having Flitter jump doesn't seem to help. It's also interesting that he's not tall enough to reach some of the dungeon levers -- the one in Dragonspire seems to be particularly difficult. I have to switch to someone else.
I've never tried vanishing past the firebeast. I have seen that if I didn't have the dragon armor (or at least didn't have it on), I ran into some kind of barrier field when trying to get past it.
*what's that?*
Oh, sorry. Flitter just let me know he's mad at me for making fun of his *ahem* stature