(a.k.a. Mr. I Laser.)
TYPE: Boss, Ghost.
TURF: Ghost Houses.
AFFILIATIONS: Koopa Troop.
CLOSE RELATIVES: None.
SKILLS AND ATTACKS: Shoots lasers.
STRENGTHS: Very big, which makes it hard to avoid.
WEAKNESSES: Gets dizzy easily, can't move.
BACKGROUND: Big Mr. Is are exactly what their name implies: bigger Mr. Is. Bowser thought that he would give one star to Big Mr. I, because he assumed that bigger is better. Big Mr. I ruled Big Boo's Haunt, along with Big Boo.