Mayu Bird

Mayu Bird is a bird-like enemy with protruding fangs coming from Wario Land 4 that is also an enemy in the infamous Adventure mode level, Floating Islands.

In Super Smash Flash
Mayu Birds are part of the many aerial enemies in Super Smash Flash, alongside Flying Goombas, Buzzers, Beezleys and Pearl Birds. They are exclusive to the aforementioned Floating Islands, where they follow the player around where contact with them results in the character taking damage and getting pushed back a bit. Unlike their source game, all the Mayu Birds' frame deals damage, its fangs are not necessarily the spot that deal damage. One single hit is enough to defeat them, a common trait for all the enemies in the game.