This article is about the enemy debuting in Super Mario 64
. For information about the character in Mario Party Advance, see here
“Running around in circles makes some bad guys roll their eyes.”
—Signpost, Super Mario 64
A Mr. I is one of the more spooky-oriented species in the Mario series. Its name is self-descriptive; they seem to be nothing more than a giant eyeball. Additionally, Mr. I is always completely immobile, as it can only rotate around in place.
 Super Mario 64
A Mr. I from Super Mario 64
It first appeared in Super Mario 64 where the only thing it can do is shoot strange, white bubbles at Mario from its pupil (In Super Mario 64 DS, this was changed to a blue burst). It always keeps its eye on Mario, and can be dizzied into submission if Mario runs in a circle around it in either clockwise or counterclockwise, rewarding Mario with a Blue Coin. The much larger version, Big Mr. I, is in the attic of Big Boo's Haunt. The standard Mr. I can be found in Big Boo's Haunt, Lethal Lava Land, and the Hazy Maze Cave.
 Mario Party series
 Mario Party 2
Big Mr. I appeared in Mario Party 2 in the Horror Land board, where he would offer to move the player across the board for ten coins.
 Mario Party 3
In Mario Party 3, a few Mr. Is appeared in the battle minigame Eye Sore where the player would have to run around them in order to win.
 Mario Party 5
A Mr. I later appeared in Mario Party 5 as a weapon in Super Duel Mode. It would shoot a blue laser to stun enemies.
 Mario Party 8
Two Mr. Is in the minigame Eyebrawl in Mario Party 8
In Mario Party 8, Mr. Is and Big Mr. I appear in the minigame Eyebrawl, where instead of running around them like in the Eye Sore minigame, the player must draw circles around them with the Wii Remote. In this game, Mr. I took on a more oblong shape. Whoever gets Mr. I dizzy first wins the minigame. The loser is haunted by Mr. I.
 Mario Party Advance
In Mario Party Advance, a notable Mr. I (simply named Mr. I) is a resident of the Horror Area who is in love with Princess Peach. If the player meets Mr. I while playing as Peach he will give her the Hope Chest Gaddget.
 Super Paper Mario
| Super Paper Mario Enemy
| Mr. I
|| Merlee's Basement, Castle Bleck
| Card Type
| Card Description
|It's an eye. A big, juicy, unblinking ever-watching eye. ...Gross.
|It's a Mister I. These bizarre foes can't help but give you the evil eye... Max HP is ??. Attack is 2. It will shoot sharp glances at any enemy it spots... None of your attacks will work... Try flipping and spinning around and around it...
| List of Catch Cards|
99 100 101
In Super Paper Mario, Mr. I, identified as Mister I, appears in Merlee's Mansion and Castle Bleck; this Mr. I is immune to conventional attacks and can only be defeated by running around it repeatedly while using Mario's Flip technique. Alternatively, the player may use Fleep's ability on it. Like in previous appearances, Mr. I would attack the player by shooting them with a laser beam. This is the only game to feature Mr. I in 2-D. The game also introduces a sub-species of Mr. I called Red I.
 Names in Other Languages
||Comparable to "goggle"
||"O" is the first letter of Occhio, meaning "eye"