Waddle Doo
Waddle Doos are enemies from the Kirby games. They look like Waddle Dees, except they have a big, unblinking eye instead of a face which can shoot out lasers. When kirby swallows them (in the Kirby games), he gets the Beam ability.
In Super Smash Brothers Brawl
King Dedede's side special, the Waddle Dee Toss is also capable of throwing Waddle Doos, but Waddle Doos are rarer. When a Waddle Doo is thrown, it walks aimlessly around the stage, much like Waddle Dees, even going off edges. The difference between Waddle Dees and Waddle Doos is that Waddle Doos will shoot a beam out of their eye when near an opponent, doing more damage and giving them more range. Waddle Doos will also appear when King Dedede uses his Final Smash, Waddle Dee Army, but there will be less Waddle Doos then there will be Waddle Dees.