Stick Ranger: Cavern Chronicles/Mud Grotto 2/Olive X Bouncer

About
These foes are some of the most threatening in Mud Grotto 2. Their attack, a ball that moves in an arc, is surprisingly fast, they boast good range and tend to spawn in groups of at least two, which means they can kill unexperienced players easily. You'll want to be more careful when dealing with these enemies, although they're relatively frail, which makes them easy to kill once you're in range.