Concept art for Hatchet Man (confirmed for a place in the game) and Tree Dude (potential extra character). Hatchet Man first appears in the plains/fields level where he charges at the player. His purpose is to look dangerous whilst actually being harmless (he cannot be interacted with/does not harm the player).
Treedude is Hatchet Man's mortal enemy, a tree that refuses to be cut down and utilizes solar rays to power the force field that protects him from Hatchet Man's hatchet.