I call them the Anti-Blocky, AKA the Blocky Man equlivalient of Super Mario Goombas.
I'm having a great time working on this game. I've always wanted to make a Mario clone, and I'm suprised I didn't do this sooner.
The enemies don't interact with Blocky Man yet, so the player can move right through them. However, they do move from side to side like mario enemies.
Tommorrow I'll actually make it so they do something besides move around.