Hider

These clever fellows love playing hide-and-seek. A bit impatient though, so if you take too long to find them, they'll start throwing things at you! Stay on your toes!

Strategy
Wait for them to pop out and throw things at you, and then when they come out, stun them right away. It tends to be harder to get them if you go up to them when they are still in their hiding place, partly because they can't be stunned when in it.