Mr. I

Mr. Is are enemies in Super Mario 64. They are large eyeballs. They attacks by shooting orbs at Mario upon focusing on them. They are defeated by being circled around.

There is also a boss variant known as a Big Mr. I that appears in Big Boo's Haunt. Mr. I enemies can be found in Big Boo's Haunt, Lethal Lava Land, and Hazy Maze Cave.

Red Eye
In some personalized copies, the iris of Mr. I is red. This usually makes it take longer to defeat the Mr. I, and makes the orbs the Mr. I shoots deal more damage.

Mrs. I
In some personalized copies, Mr. Is are replaced by an enemy known as Mrs. I. Told apart by a pink bow placed on top of their body, not much is known about these enemies or how they differ from the standard Mr. Is.