Komorin

Komorin are bat enemies that appear only in Mario & Wario. They appear in the illusion of a single bat hanging on a ceiling, but once a character approaches, four bats spread out from the same spot. A faster character such as Yoshi usually does not have a problem with running by them, but slower ones like the Princess or even Mario can get caught. To assist, Wanda can hit each of them with her wand to make them disappear. They are most prominent in LEVEL 4, where they appear in every area.

Perfect Edition of the Great Mario Character Encyclopedia
「コモリン 種族 フライ族 性格 友達好き 登場ゲーム M&W」 いつも4匹なかよくいっしょ コウモリのモンスター・コモリンは、4匹が重なるようにとまっている. 近づくと、4匹がバラバラに飛びはじめるので、その前にワンダの杖で叩いて倒そう.

Komorin Species: Flying Tribe Disposition: Amiable Appears in: M&W The four animals always get along well together. ''The bat monster, Komorin, is perched so that four of them are stacked on top of each other. When you get close to them, they will start to fly apart, so you must hit them with Wanda's wand before they can be defeated.''