Gusty

From the Super Mario Wiki

Gusties are long, happy ghost-like creatures in Super Mario World 2: Yoshi's Island, Yoshi Touch and Go and Yoshi's Island DS. They always travel in huge packs, giving Yoshis extra eggs, and making stepping stones to reach high areas. Unfortunately, they fly all over the screen, making quick movements hard.

They appear in levels where the terrain is bumpy and uneven.

Undead
Luigi's Mansion Ghosts Characters Neville | Lydia | Chauncey | The Floating Whirlindas | Shivers | Melody Pianissima | Mr. Luggs | Spooky | Bogmire | Biff Atlas | Miss Petunia | Nana | Slim Bankshot | Henry and Orville | Madame Clairvoya | Boolossus | Uncle Grimmly | Clockwork Soldiers | Sue Pea | Jarvis | Sir Weston | Vincent Van Gore | King Boo | 50 Boos Species Bat | Blue Blaze | Blue Mouse | Blue Twirler | Bowling Ghost | Ceiling Surprise | Flash | Flying Fish | Garbage Can Ghost | Grabbing Ghost Gold Ghost | Gold Mouse | Mr. Bones | Purple Bomber | Purple Mouse | Purple Puncher | Shy Guy | Spark | Speedy Spirit | Temper Terror | Waiter | Bogmire Shadow | Fire Elemental Ghost | Ice Elemental Ghost | Trapdoor | Water Elemental Ghost
Other/Unknown Species/Characters ???? | Bink | Blinky | Bloat | Bone Dragon | Bonechill | Boneheads | Bonetail | Bony Beetle | Boo | Bouldergeist | Caged Ghost | Captain Skull | Cortez | Count Zoltan Dracula | Cractus | D-Man | Dangling Ghost | Dark Skellobit | Dark Spiky Skellobit | Davy Bones | Doopliss | Doppel | Dry Bowser | Eerie | Elvis Presley | Ember | Exterminator | Fishbone | Flightless Skeleton Goonie | Frankenstein's Monster | Ghost Barrel | Ghost Glove | Ghost Goom | Ghost Piranha | Ghost Rider | Ghost Rope | Ghosts of Christmas | Ghost T. | Ghoul Guy | Giant Ghost | Glum Reaper | Goomba Mummy | Gooey | Greaper | Grim Leecher | Grindel | Gusty | Hector the Reflector | Hobgoblin | Honen | Hoohoo Spirit | Invisighoul | Inviso | Queen Jaydes | Jean de Fillet | Kackle | Kingfin | Kloak | Krossbones | Krow | Lava Bubble | Madam Merlar | Mastadoom | Merlumina | Meteor Ghost | Monsieur Boo | Mummipokey | Mummy Guy | Pandorite | Phantom Ember | Phantom Guy | Phantom Hand | Pionpi | Pokey Mummy | Poobah the Pharaoh | Queen Mushroomkhamen | ReDead | Reacher | Resident Demon | Roger the Potted Ghost | Sarcopha Guy | Shadow | Shadow Queen | Shayde | Shiisa | Skeleton Bee | Skeleton Goonie | Skellobait | Skellobit | Skellobomber | Skellokey | Slime Ghost | Spiky Skellobait | Spiky Skellobit | Spindel | Straw Head | Support Ghost | Three Musty Fears | Tweeter Bat | Underhand | Wrinkly Kong | Zombie Goomba | Zombone

Yoshi series Enemies
Main Antagonists Baby Bowser | Bowser | Kamek
Minor Antagonists Bessie Bass | Big Bungee Piranha | Bigger Boo | Big Guy the Stilted | Burt the Bashful | Burt Bros. | Cloudjin | Cloud N. Candy | Don Bongo | Gilbert | Hector the Reflector | Hookbill the Koopa | Inviso | Marching Milde | Moltz the Very Goonie | Naval Piranha | Prince Froggy | Priscilla the Peckish | Raphael the Raven | Roger the Potted Ghost | Salvo the Slime | Six-Face Sal | Sluggy the Unshaven | Tap-Tap the Golden | Tap-Tap the Red Nose
Enemy Classes Dudim Phreykunoutonthis | Edibilis Boringus | Harrassimentia Phlyoverus | Mostosti Vomitonus | Projectilia Ritebakatchia | Ucantia Defeatus
Enemies Aerial Snifit | Aqua Lakitu | Bandit | Barney Bubble | Bat | Big Boo | Biting Bullet Bill |Blargg | Blooper | Blow Hard | Bone Dragon | Boo | Boo Balloon | Boo Blah | Boo Guy | Boo Man Bluff | Bouncy | Boss Bass| Bouncing Bullet Bill | Bowling Goonie | Bubble Dayzee | Bullet Bill | Bumpty | Bungee Piranha Plant | Burt | Cactus Jack | Cannibal Guy | Chomp Shark | Clawdaddy | Cloud Drop | Coin Bandit | ComBat | Crabble | Crazee Dayzee | Crusher Blargg | Dangling Ghost | Debull | Drop Hard | Eggo-Dil | Fat Guy | Flightless Goonie | Flightless Skeleton Goonie | Flopsy Fish | Fly Guy | Frog Pirate | Gabon | Gargantua Blargg | Ghost Piranha | Glide Guy | Gobblin | Gooey Goon | Goomba | Goonie | Green Glove | Grim Leecher | Grinder | Grunt | Gusty | Hanging Blow Hard | Hot Lips | Incoming Chomp | Invisighoul | Koopa | Lakitu | Lantern Ghost | Large Milde | Lava Drop | Lemon Drop | Little Mouser | Little Skull Mouser | Loch Nestor | Lunge Fish | Lure Ghost | Melon Bug | Milde | Mini-Raven | Mufti Guy | Needlenose | Nep-Enut | Nipper Dandelion | Nipper Plant | Parakoopa | Pirate Guy | Piro Dangle | Piscatory Pete | Podoboo | Pokey | Potted Ghost | Potted Spiked Fun Guy | Preying Mantas | Pyro Guy | Raven | Rocket Guy | Seedy Sally | Short Fuse | Shy Guy | Shy Stack | Skeleton Goonie | Slime | Slug | Slugger | Spear Guy | Spike (creature) | Spike (moving obstacle) | Spiked Fun Guy | Spooky | Spray Fish | Spring Plant | Stilt Guy | Stompin' Chomp | Stretch | Tap-Tap | Thunder Lakitu | Tube Guy | Very Goonie | Wall Lakitu | Whirly Fly Guy | Wild Piranha | Wild Ptooie Piranha | Windbag | Woozy Guy | Zeus Guy (Bandit) | Zeus Guy (Snifit)