Sorcerer Mickey as his name implies is the Sorcerer's Apprentice identity of Mickey Mouse.
He first appeared in the 1940 film
Fantasia, in the Sorcerer's Apprentice, segment. In that short he was shown as a helper to Yen Sid. The segment was shown again in Fantasia 2000. Mickey's sorcerer outfit has since become iconic and he is often shown wearing it.
The Senational Six
Characters: Mickey Mouse, Minnie Mouse, Donald Duck, Daisy Duck, Goofy, Pluto
Alternative Identities: Sorcerer Mickey, The Duck Avenger, Super Daisy, Super Mickey, Wonder Minnie, Super-Power Pup, Super Goof, Dynamo Duck, Upsy-Daisy, James Goof
Main: Daisy Duck, Donald Duck, Goofy, Mickey Mouse, Minnie Mouse Pluto
Secondary: April, May and June, Chip 'n' Dale, Clarabelle Cow, Grandma Duck, Horace Horsecollar, Huey, Dewey and Louie, Ludwig Von Drake, Max Goof, Millie and Melody, Morty and Ferdie, Scrooge McDuck
Other: Aracuan Bird, Arizona Goof, Baby Herman, Baby Shelby, Mrs. Beakley, Benny the Cab, Beret Girl, Big Bad Wolf, Blackjack, Bobby Zimuruski, Bubba the Cave Duck, Chi-Chi, Clara Cluck, Clarice, Cuckoo-Loca, Dinah the Dachshund, Darkwing Duck, Della Duck, Dickie Duck, Dim-Witty Duck, Donna Duck, Doofus Drake, Duckworth, Eega Beeva, Ellsworth, Felicity Fieldmouse, Fenton Crackshell, Fethry Duck, Figaro, Gadget Hackwrench, Gilbert Goof, Gladstone Gander, Glittering Goldie, Gloria, Mrs. Goof, Grandma Goofy, Gosalyn Mallard, Gram-Gram Peg-Leg, Gubbles, Gus Goose, Gyro Gearloose, Humphrey the Bear, J. Audubon Woodlore, Jessica Rabbit, Jiminy Cricket, Mr. Jollyland, José Carioca, Launchpad McQuack, Little Helper, Lena, Mona, Newton Gearloose, Chief O'Hara, Oswald the Lucky Rabbit, Panchito Pistoles, Baby Panda, Peg Pete, Peter Pig, Mr. Pettibone, Pistol Pete, P.J., Pluto's Angel, Pluto's Kid Brother, Powerline, The Quin-Puplets, Roger Rabbit, Roxanne, Roxanne's Father, Salty the Seal, Spike the Bee, Stacey, Storkules, Susie Beagleman, Sylvia Marpole, Three Little Pigs, Three Little Wolves, Tiki, Toodles, Tootsie the Triceratops, Mrs. Turtle, Webby Vanderquack, Wilbur, Witch Hazel, Zeus