Bahamutt- Huge red dragon. Comes out of the Chester in Bowser's keep. (SMRPG)
Ball 'n Chain: Revolving spiked mace tied to a four block long chain (SMW)
Bandana Blue- A pirate shark with a blue bandana. Has several different stabbing attacks. (SMRPG)
Bandana Red- A pirate shark with a red bandana. Weaker than blue. (SMRPG)
Banzai Bill: A huge bullet bill, two times taller than Mario(SMW)
Barbecue Boy-A guy that pushes around a hot large candle thing. (YS)
Barney Bubble: Stomp on him and he'll blow bubbles, which you can then swallow and spit out. (YI)
Baron Von Zeppelin: Bombs away! The Baron always pauses before releasing his payload, so dash for cover! (YI)
Batadon: A winged stone statue. It tries to crush Mario as it flies. (SML)
Beetles
Bony Beetle: Small white beetle that regenerates a few seconds after dying (SMW)
Buster Beetle: Small black shelled beetle that throws blocks at you (SMB3)
Buzzy Beetle: Invulnerable to fire. Turns to a shell when killed. (SMB)
Para-beetle Flying red shelled beetle that you can ride on (SMB3)
Belome- An odd dog-like creature with four eyes. Enjoys eating people. (SMRPG boss)
Big Bertha- A cannon in Bowser's keep. Not at all like it's SMB3 namesake. (SMRPG)
Birdos: Boss of most SMB2 levels (with an SMRPG cameo). Three hits kills her (SMB2)
Birdo: A boss in Valentina's castle. Starts in an egg. Shoots eggs at you. (SMRPG boss)
Green Birdo: Just shoots fireballs at Mario (SMB2 boss)
Pink Birdo: Just shoots eggs at Mario (SMB2 boss)
Red Birdo: Shoots eggs and fireballs at Mario. Most common Birdo. (SMB2 boss)
Birdy- A weird "Marvin the Martin" type character in a red bird suit. Valentina's guards. (SMRPG)
Blargg: Lava monster in the caverns of SMW, usually on bone rafts (SMW)
Blaster- Big Bertha's weaker twin. Found in Booster's Tower. (SMRPG)
Blokinton: The boss of the Chai Kingdom. Because of his shyness, he constantly hides in a cloud. Up to now nobody has ever seen what he looks like. You can defeat him with 20 missiles. (SML)
Bloober: White squid-like creatures that chases you around the water (SMB)
Blow Hard: They spit prickly seeds with painful accuracy. Stun them
Blue Bird- Birdy's stronger, blue twin. (SMRPG)
Blurp: Straight moving fish, similar to cheep cheep (SMW)
Bob-omb: Small black bomb that explodes after a few seconds (SMB2)
Bone Dargon-A fire-breathing skeleton dragon that lives in caves(YS)
Boos: Ghosts that shy away from your gaze
Big Boo: A huge boo buddy. Sometimes a boss. Three hits and it's dead (in SM64). Also found in blue form. (SMW)
Block Buddy: Boo buddies that turn to platforms when you look at them (SMW)
Boo Buddy(Original Name Boo Diddly): Regular ghost that floats and stops when you look at it. Sometimes attacks you in groups. (SMB3)
Blindfold Boo- He can't see you, but if you're noisy he can get you (YS)
Blue Boo: They only flutter in the darkest chamber of Bigger Boo's
castle. Hit them with three eggs. (YI)
Boo Balloon: Hit this balloon ghost three times to make something special happen. (YI)
Boo Blah: Lurking in the stonework of Bigger Boo's castle, the Boo
Blah's "Boo!" is worse than its bite. (YI)
Boo Group-A group of Boo Buddies and a Big Boo for a leader. (YS)
Boo Guy: A ghost Shy-guy? Easily defeated, hop on his head to beat him. (YI)
Boo Man Bluff: This blindfolded Boo only gives chase if you make a lot of noise. (YI)
Dangling Ghost: Avoid this ghost that hangs from the ceiling. (YI)
Eerie: Floating Dinosaur-like Boo Buddy that never alters it's course (SMW)
Fishing Boo: Ghost floating in a cloud with a blue fireball on a fishing pole (SMW)
Lantern Ghost: This not so scary ghost carries a lantern around caves and castles. (YI)
Stretch:Long white block with boo buddies heads popping out (SMB3)
Bookend: Flying book come to life with sharp teeth (SM64)
Boom-Boom: Boss of the SMB3 fortresses and other levels. Three hits kills it. (SMB3)
Boomer- Some sort of Samurai thing. Increases his defense and offence a lot. (SMRPG boss)
Booster- Appears to be some distant relative of Wario. Likes playing with trains. (SMRPG boss)
Bowser Clone- Like all the character clones, he attacks you with attacks the real Bowser will never learn. (SMRPG boss)
Bowser: King of the Koopas, final boss of many Mario games. (SMB)
Bowyer- An insane archer is he. Disable controller buttons he will. (SMRPG boss)
Box Boy- A living chest with a Fautso inside. Jumps work well on him. (SMRPG)
Bub & Bubba: A small fish and a huge fish that hurt Mario if he isn't too careful. (SM64)
Bubble Dayzee: He walks around and spits bubbles from his mouth. Yoshi can sollow these and spit 'em back out. (YI)
Bullet Bill: Bullet shot from a cannon at Mario (SMB)
Bumpty: Avoid this annoying penguin as it can't be eaten or stomped. (YI)
Bumpty-He tries to bump you off cliffs. A penguin (YS)
Bunbun: Bunbun flies around in the sky dropping arrows. (SML)
Bundt- A three layer wedding cake. Has surprisingly hard attacks. (SMRPG boss)
Burt: These jumping fiends leap around on Fortress 1. (YI)
Buzzer- An evil-looking bumblebee. Poison based attacks. (SMRPG)
Ding-A-Ling- The alarm bells on Count Down. Do all the musical attacks from the game. (SMRPG boss)
Dino Rhino: Large Blue Triceratops-like creature that turns to fire breathing mini-rhino when bopped (SMW)
Director- A red clone of the Factory Manager. Harder than him as well. (SMRPG boss)
Dizzy Dandy: The best way to deal with this fake flower is to jump when it rolls underneath. (YI)
Dodo- Valentina's mute pet Dodo bird. Pecks you with his banana beak. (SMRPG boss)
Do-Drop-He drops from the ceiling. Eating him hurts. A drop (YS)
Domino- Cloaker's veil wearing buddy. Does magic attacks. (SMRPG boss)
Don Bongo-The boss of the level "Frustration" He is a fat lizard and his
Doppel- A ghostly turquoise shadow found in Smithy's factory. Ghostly attacks. (SMRPG)
Dr. Freezegood: Just a snowman. They can't hurt you at all. (YI)
Dragonzamasu: The boss of the Muda Kingdom, Dragonzamasu is protected by Tamao. It moves up and down and spits out fire. Mario can defeat it with 20 torpedoes. (SML)
Gabon-A fat little turtle that hurls spike balls (YS)
Gachan: Rocks that fall suddenly from the sky. They are terrible if they hit and squash you, but useful because you can jump on one and let it take you for a ride. Ganchans can't be beaten. (SML)
Gao: This stiff-bodied creature doesn't move. But it spits out fireballs aimed at Mario. (SML)
Gargantua Blargg: A huge orange Blargg that lives in lava rivers. (YI)
Geckit- A stronger, orange version of Gecko. (SMRPG)
Gecko- A green lizard found in Star Hill. Runs away most of the time. (SMRPG)
Geno Clone- A clone of Geno that Belome makes. Starry attacks. (SMRPG boss)
Georgette Jelly: You can splatter a jelly on the walls, but they always spring back for more gooey good times. (YI)
Ghost Rider-Bowser's Transportation. A long ghost. (YS)
Ghost Stream-A long ghostly string that you can use to reach higher (YS)
Gira: Gira is a missile that takes of straight from a launch pad. Mario can defeat it by stepping on it. (SML)
Goby- Traditional Cheep-Cheep. First water-type enemy you encounter. (SMRPG)
Goombas : Brown walking blobs. The most basic enemy.
Grand Goomba: Large Goomba found in World 4 of SMB3 (SMB3)
Goomba: Regular walking brown guy. A basic enemy. (SMB)
Goomba-in-a-block:A micro-goomba in a block that leaps at Mario (SMB3)
Goomba in a bubble: A goomba trapped in a bubble that can be popped by Mario (SMW)
Kuribo's Goomba: A Goomba in a Kuribo's shoe (SMB3)
Micro-goomba: A tiny, 8x8 pixel goomba. Usually with other goombas (SMB3)
Para-goomba: A hopping goomba with wings (SMB3)
Para(chute) goomba: A goomba that floats downward on a parachute (SMW)
Goonies : White birds found around Yoshi's Island (YI)
Bowling Goonie: This bird rolls along the ground.
Flightless Skeleton Goonies: This scary skeleton goonie sprints along the ground.
Flightless Goonie: This little goonie chick sprints along the ground.
Goonie: A beautiful white bird. Take a ride on it's back.
Heavy Goonie: A big fat goonie that can't quite take off.
Skeleton Goonie: A scary goonie with no skin, flesh or feathers. AHHH! (YI)
Grate Guy- A purple clown balancing on a ball. His trumpet playing really "grates" your nerves. (SMRPG boss)
Green Glove: Always looking for an egg to play catch with, Green Glove's favorite pitch is the high hard one. (YI)
Green Toady: This tearaway toady will make grabbing Mario even harder than before. (YI)
Grim Leecher: This usurper kicks Mario off, hops on Yoshi's back and reverses your controls. (YI)
Grinder: These monkeys live in the jungles of World 3 and hop around, waiting to grab Baby Mario, they also swing from trees solo and in a bunch and swim in lakes. (YI)
Grinder: A rotating blade that slides along platforms (SMW)
Grunt: A spiked-top creature that walks around. (YI)
Gu Goomba- A Goomba with a slightly green tint. Found in Boswer's Keep. (SMRPG)
Guerilla- Chained Kong's weaker twin. Strong at the time you fight him, though. (SMRPG)
Gun Yolk- The Factory Chief's robotic pet. Shoots fire from its yolk-like slime. (SMRPG boss)
Gunion: The Gunion shakes up and down in the water. Take care because if you hit it with 2 torpedoes, it splits into two and attacks. (SML)
Gusty: A happy creature that floats on the wind, but in packs they can be deadly. (YI)
Amazing Flying Hammer Bros.: Large hammer bros. on a flying platform that throw hammers. (SMW)
Boomerang Bros.: Hammer Bros. that fire boomerangs(SMB3)
Fire Bros.: Hammer Bros. that spits fire from their mouths (SMB3)
Hammer Bros.: Regular hammer bros. that throw hammers (SMB)
Sledge Bros.: Huge hammer bros. whose stomp stops Mario in his tracks. (SMB3)
Sumo Bros.: A Sumo Wrestler that stomps making lightning drop that creates a wave of fire. (SMW)
Harry Hedgehog: You won't like it if you land on Harry's spikes. (YI)
Heave-ho: Little robot type thing that throws you into the air by a platform he carries. (SM64)
Hidon- A green member of the Treasure Box family. Six Gombettes are inside. (SMRPG)
Hippopo- A blue hippo thing with large ears and a small passenger on it's back. Found at the Gate. (SMRPG)
Hiyoihoi: The boss of the Easton Kingdom, Hiyoihoi evolved from a Tokotoko. It comes at Mario, throwing Ganchans, so mind you don't get crushed. Jumping on Hiyoihoi won't defeat it but 10 superballs will do the trick. (SML)
Hobgoblin- A mole shaped scarecrow. Can be killed with pure water, surprisingly. (SMRPG)
Honen: The skeleton of a Torion after it's been eaten by Tatanga. It always flies up vertically from the water. A superball can't stop it. (SML)
Hoopster: Small ladybug that climbs vines (SMB2)
Hopping Tap-tap: This Tap-tap hops on the spot. (YI)
Hot foot: A candle flame that chases Mario (SMB3)
Hot Lips: A Blargg-like creature that rises from the lava and spits lava at you (YI)
Pak E. Derm-An elephant that holds a stop sign. He won't let you past. (YS)
Pakkun Flower: This man-eating plant grows out of pipes. Watch out because it sticks it head up quickly. You can't step on it from above. (SML)
Pandorite- A monster that lives in a chest. After you kill him, hit his chest for coins galore. (SMRPG)
Para(chute) bob-omb: A bob-omb that floats from the sky on a parachute(SMW)
Peeper-Fat little birds. (YS)
Phanto: a floating mask that follows Mario through walls when he has a key (SMB2)
Pidget Bill: A small, black bird that comes out of cannons. Appears after you beat Special World. (SMW)
Pidget: A small, black bird that floats on a magic carpet (SMB2)
Pinwheel- A fan that lives in Nimbus Land. The one in Monstro Town controls them all. (SMRPG)
Pionpi: Hopping about and persistently dogging Mario, no matter how many times you jump on Pionpi, he keeps coming back to life. But you can defeat him with a superball. (SML)
Pink Beezo: Flying shyguy masked bee type thing. Flies straight at Mario. (SMB2)
Piranha Plants: Plumber devouring flowers with sharp teeth. Usually found in pipes
Giant Piranha Plant: Huge piranha plant found in World 4 of SMB3 (SMB3)
Green Piranha Plant: regular, spiky mouthed plant that usually comes from pipes (SMB)
Jumping Piranha Plant: Piranha that jumps from pipes (SMW)
Jumping Pumpkin Plant: Piranha with the head of a pumpkin that jumps from pipes. Appears after you beat Special World. (SMW)