These creepy guys can only chase or kill the you.
Press SPACEBAR + CTRL to spawn Creepy Guys 1
Press SPACEBAR + SHIFT to spawn Creepy Guys 1 (invincible)
Press SPACEBAR + \ to spawn Creepy Guys 2
Press SPACEBAR + BACKSPACE to spawn Creepy Guys 2 (invincible)
Bonus
Press SPACEBAR + 1 to spawn a bum (It never kills the player, but he kills the police when they fire)