Illusian

Illusian (イリュジャン) is a flying film projector enemy in Mega Man 9, that only appears in Wily Stage 2. It flies from one side of the screen to another, periodically stopping to create fake holographic blocks. The fake blocks look deceptively solid, but are actually nonexistent.

Trivia
Its name is derived from the word "illusion" (イリュージョン iryūjon).