Hammer Bro.

Hammer Bros. (ハンマーブロス, Hanmā Burosu) are enemy characters present in many of Nintendo's Mario series of video games. Their trademark distinction is that they appear in pairs, though there are instances where only one appears. Their trademark move is that they attack by throwing large hammers in an arcing path. Their appearance shows them having distinct beaks, classifying them as "Beaked Koopas." However, there are some games where they do not have the distinct beaks and look like normal Koopas.