One cryptozoological creature I almost never see mentioned is the Tatzelwurm
. It's basically a giant serpentine creature with a pair of front legs and somewhat feline features rumored to lurk in mountainous European areas.
If we're talking Native American creatures, one of my favorites are the Giant Flying Heads featured in some Iroquois stories. A giant boulder sized head with a mouth full of fangs, covered with dark hair, flying with bat wings. That'd be fun to come across in a dark forest at night.
Finally: Geryon. He always struck me as the loser of Greek mythology's 'Random mash up of animal and body parts' lottery. Specifically the versions where he's a guy with three bodies sprouting from a single set of legs. The Chimera and Hydra and Cerberus have all been made into entire species of monsters, but not poor Geryon.
Nobody wants to be a pawn in the game of life. What they don't realize is the game of life is Minesweeper.