T-RexA dinosaur who gets really enthusiastic about ideas. Appears in all six panels.
UtahraptorT-Rex's somewhat saner friend and comedic foil. Appears in panels four and five.
DromiceiomimusT-Rex's supportive (that is, less aggressively critical) friend. Appears in panel three.
GodCreator and maintainer of the cosmos. Seems to have a lot of free time.
The DevilThe Adversary. Very serious about videogames.
MorrisA very small insect with problems.
Mr. TusksAn elephant afflicted with island dwarfism. Vice-mayor of Tiny Towne.
Professor ScienceA diplodocus with a square graduation hat that for some reason, T-Rex answers SCIENCE mail for. The Professor seems to just ignore T-Rex.
The Tiny Woman in Panel Four