Big Mr. I is a larger variation of Mr. I found in Big Boo's Haunt in Super Mario 64. Its bubble increases damage due to its weight. Big Mr. I is a miniboss, and defeating him unlocks the Power Star associated with the mission Eye to Eye in the Secret Room.

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Characters	Playable	Mario • Yoshi • Luigi** • Wario**
	Supporting	Bob-omb Buddy • Dorrie • Headless Snowman • Hoot • Koopa the Quick • Lakitu Bros. • MIPS* • Mother Penguin • Penguin Champ • Princess Peach • Rabbits** (Glowing**) • Toad • Tuxie
	Bosses	King Bob-omb • Whomp King • Goomboss • Bowser#1 • Big Boo • Big Mr. I • King Boo • Big Bully • Eyerok • Bowser#2 • Chill Bully • Chief Chilly • Wiggler • Bowser#3
Enemies	Enemies	Amp • Beach Koopa • Big Bertha** • Big Steely • Big Venus Fire Trap • Bob-omb • Boo • Bookend • Bub* • Bubba* • Bullet Bill • Bully • Butterfly • Chair • Chain Chomp • Cheep-Cheep** • Chuckya • Clam • Fire Chomp** • Fly Guy • Fwoosh • Goomba • Grand Goomba • Grindel • Heave Ho • Klepto • Koopa Troopa Kuromame* • • Lakitu • Mad Piano • Manta • Micro-Goomba • Moneybag • Monty Mole • Mr. Blizzard • Mr. I • Piranha Plant • Podoboo • Pokey • Scuttle Bug • Skeeter • Snufit • Spindel • Spindrift • Spiny • Sushi • Swooper • Thwomp • Tox Box • Tweester • Ukiki • Unagi the Eel • Venus Fire Trap • Whomp
Items	Items	1-UP Mushroom • Big Key • Blue Coin • Jumbo Star • Key • Luigi Key** • Luigi Cap** • Mario Key** • Mario Cap • Metal Cap* • Mushroom** • Power Flower** • Power Star • Red Coin • Secret • Silver Star** • Vanish Cap* • Wario Key** • Wario Cap** • Wing Cap • Yellow Coin
Objects	Regular	! Switch • Arrow Lift • Arrow Sign • Big Star Door • Block • Blue Coin Block • Bubble ring • Cannon • Cap Block • Cap Switch • Chairlift • Conveyor Belt • Crate • Crazed Crate • Crystal Tap • Falling Block • Flowers • Ice Block • Key Door • Koopa Shell • Lift • Magic Carpet • Mushroom Platform • Painting • Pendulum • Pole • Rainbow Cruiser • Rolling log • Seesaw • Shrinker Pipe • Slide • Spiked orb • Spinning Heart • Star Door • Star Marker • Star Sphere** • Star Switch** • Stump • Switching room** • Treasure Chest • Tree • Warp Pipe • Wire net • Work Elevator • Yoshi Egg**
	Obstacles	Boulder • Casket • Coffin • Current • Endless stairs • Fire Arm • Flamethrower • Frozen Water • Hidden smasher • Iron ball • Lava • Moving sand • Pit • Quicksand • Skull Crate • Toxic Gas • Turtle Cannon • Water bomb • Whirlpool
Moves	Moves	Backward Somersault • Crawl • Crouch • Dash • Dive • Double Jump • Egg Throw** • Flutter Kick** • Fly • Jump • Jump Kick • Kick • Long Jump • Pound the Ground • Punch • Scuttle** • Side Somersault • Slide • Slide Kick • Spin Jump • Stomp • Swallow** • Sweep Kick • Swim • Triple Jump • Wall Kick • Wild Swing-Ding**
	Power-ups	Balloon Mario** • Fire Power** • Mega Mario** • Metal Mario*/Metal Wario** • Vanish Mario*/Vanish Luigi** • Wing Mario
Courses	First floor	Bob-omb Battlefield • Whomp's Fortress • Jolly Roger Bay • Cool, Cool Mountain • Goomboss Battle • Bowser in the Dark World
	Castle Courtyard	Battle Fort (DS only) • Big Boo's Haunt • Big Boo Battle (DS only)
	Basement	Hazy Maze Cave • Lethal Lava Land • Shifting Sand Land • Dire, Dire Docks • Bowser in the Fire Sea
	Second floor	Chief Chilly Challenge • Snowman's Land • Wet-Dry World • Tall, Tall Mountain • Tiny-Huge Island
	Third floor	Tick Tock Clock • Rainbow Ride • Bowser in the Sky
Power Stars	Bob-omb Battlefield	Big Bob-omb on the Summit • Footrace with Koopa the Quick • Shoot to the Island in the Sky (N64) • 5 Silver Stars (DS) • Big Bob-omb's Revenge (DS) • Find the 8 Red Coins • Mario Wings to the Sky • Behind Chain Chomp's Gate*
	Whomp's Fortress	Chip Off Whomp's Block • To the Top of the Fortress • Shoot into the Wild Blue • Red Coins on the Floating Isle • Fall onto the Caged Island • Blast Away the Wall • Switch Star of the Fortress (DS)
	Jolly Roger Bay	Plunder in the Sunken Ship • Can the Eel Come Out to Play? • Treasure in the the Ocean Cave • Red Coins on the Ship Afloat • Blast to the Stone Pillar • Through the Jet Stream • Switch Star of the Bay (DS)
	Cool, Cool Mountain	Slip Slidin' Away • Lil' Penguin Lost • Big Penguin Race • Frosty Slide for 8 Red Coins • Snowman's Lost His Head • Wall Kicks Will Work (N64)/Mario's Super Wall Kick (DS) • Switch Star of Cool, Cool Mountain (DS)
	Big Boo's Haunt	Go on a Ghost Hunt • Ride Big Boo's Merry Go Round • Secret of the Haunted Books • Seek the 8 Red Coins • Big Boo's Balcony • Eye to Eye in the Secret Room • Switch Star of the Basement
	Hazy Maze Cave	Swimming Beast in the Cavern • Elevate for 8 Red Coins • Metal-Head Mario Can Move! (N64)/Metal-Head Wario Can Move (DS) • Navigating the Toxic Maze • A-Maze-Ing Emergency Exit • Watch for Rolling Rocks • Underground Switch Star
	Lethal Lava Land	Boil the Big Bully • Bully the Bullies • 8-Coin Puzzle with 15 Pieces • Red-Hot Log Rolling • Hot-Foot-It into the Volcano • Elevator Tour in the Volcano (N64)/Inside the Volcano • Flaming Silver Stars (DS)
	Shifting Sand Land	In the Talons of the Big Bird • Shining Atop the Pyramid • Inside the Ancient Pyramid • Stand Tall On the Four Pillars • Free Flying For 8 Red Coins (5th Star, N64) (7th Star, DS) • Tox Box Switch Star (DS) • Pyramid Puzzle
	Dire, Dire Docks	Board Bowser's Sub • Chests in the Current • Pole-Jumping for Red Coins • Through the Jet Stream • The Manta Ray's Reward (5th Star, N64) (7th Star, DS) • Koopa Surfin' Switch Star (DS) • Collect the Caps... (N64)/Inside the Cage (DS)
	Snowman's Land	Snowman's Big Head • Chill with the Bully • In the Deep Freeze (N64) • Yoshi's Ice Sculpture (DS) • Whirl from the Freezing Pond • Shell Shreddin' for Red Coins (N64) • Snowman's Silver Star (DS) • Into the Igloo • Red Coins in the House (DS)
	Wet-Dry World	Shocking Arrow Lifts! • Top o' the Town • Secrets in the Shallows and Sky (N64)/5 Secrets in the Shallows and Sky (DS) • Express Elevator--Hurry Up! • Go to Town for Red Coins (N64)/Go to Town for the Red Coins (DS) • Quick Race Through Downtown! • Soaked Silver Stars (DS)
	Tall, Tall Mountain	Scale the Mountain • Mystery of the Monkey Cage • Scary 'Shrooms, Red Coins • Mysterious Mountainside • Breathtaking View from Bridge (Star 5, N64)/Breathtaking View from the Bridge (Star 7, DS) • Blast to the Lonely Mushroom (Star 6, N64) (Star 5, DS) • 5 Secrets of the Mountain
	Tiny-Huge Island	Pluck the Piranha Flower • The Tip Top of the Huge Island • Rematch with Koopa the Quick • Five Itty Bitty Secrets (N64) • Klepto the Condor • Wiggler's Red Coins • Make Wiggler Squirm • Switch Star of the Island (DS)
	Tick Tock Clock	Roll into the Cage (N64) • Luigi in the Cage (DS) • The Pit and the Pendulums (N64) • The Pendulum Switch Star (DS) • Get a Hand • Stomp on the Thwomp •Timed Jumps on Moving Bars • Stop Time for Red Coins • Tick Tock Silver Stars
	Rainbow Ride	Cruiser Crossing the Rainbow • The Big House in the Sky • Coins Amassed in a Maze • Swingin' in the Breeze • Tricky Triangles! • Somewhere over the Rainbow • Switch Star of the Manor
Other locations	Other locations	Big House • Princess Peach's Castle (Castle Grounds · Princess Peach's room · Rec Room**)
Minigames**	Luigi's	Lucky Stars • Mario Slot • Memory Master • Memory Match • Mushroom Roulette • Pair-a-Gone • Pair-a-Gone and On • Picture Poker • Super Mario Slot
	Mario's	Bounce and Pounce • Bounce and Trounce • Connect the Characters • Mario's Slides • Shell Smash • Shuffle Shell • Sort or 'Splode • Trampoline Terror • Trampoline Time
	Wario's	Bingo Ball • Bob-omb Squad • Coincentration • Giant Snowball Slalom • Intense Coincentration • Lakitu Launch • Psyche Out! • Slots Shot • Snowball Slalom
	Yoshi's	Boom Box • Hide and Boo Seek • Loves Me...? • Mix-a-Mug • Puzzle Panel • Puzzle Panic • Tox Box Shuffle • Wanted! • Which Wiggler?
Versions	Versions	Super Mario 64 (1996) • Super Mario 64: Shindō Pak Taiō (1997) • Super Mario 64 DS (2004)
* Exclusive to the N64 version ** Exclusive to the DS version