I-I-I

I-I-I is an enemy in 12 Rooms of Doom. It is a flying eyeball with a yellow iris. It will only appear after you beat the first level.

It returns in 12 Rooms of Doom 2. Plus it becomes the only enemy from the original game (besides Cannonsense) to be a returning enemy.

It returns again in 12 Rooms of Doom 3. It reprises it's previous role as an enemy, thus being the only enemy from the previous games to return, AGAIN.

It returns once again in 12 Rooms of Doom 0rigins as the sole generic enemy. But instead of moving side-to-side, it moves up and down, as the ground is always flat and Calvin can't jump very high.