Adamski

Adamski (アダムスキィ) is a small UFO enemy from Mega Man 9 that appears in Galaxy Man's stage and Wily Castle 2. It moves around in wave-like patterns and damages Mega Man by contact.

Trivia

 * It's probably named after George Adamski, a ufologist famous for creating a hoax ufo contact. He even provided forged pictures.
 * It makes the same sound as Wily UFO in Mega Man 1, 2 and 9, when onscreen, only quieter.