Otto Graycomb was the husband of Lolly DuBois and the father of Evelyn, Axel and Amos.

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The Simpsons and relatives
Homer Simpson • Marge Simpson • Bart Simpson • Lisa Simpson • Maggie Simpson Santa's Little Helper • Snowball II • Abraham Simpson • Patty Bouvier • Selma Bouvier • Mona Simpson • Jacqueline Bouvier • Ling Bouvier • Herb Powell
Around Springfield
Jasper Beardly • Comic Book Guy • Barney Gumble • Maude Flanders • Ned Flanders • Professor Frink • Gil Gunderson • Julius Hibbert • Lionel Hutz • Helen Lovejoy • Reverend Timothy Lovejoy • Captain Horatio McCallister • Akira • Hans Moleman • Marvin Monroe • Bleeding Gums Murphy • Apu Nahasapeemapetilon • Mayor Joe Quimby • Dr. Nick Riviera • Agnes Skinner • Cletus Spuckler • Disco Stu • Squeaky-Voiced Teen • Moe Szyslak • Sam and Larry • Kirk Van Houten • Luann Van Houten • Clancy Wiggum • Eddie • Lou • Crazy Cat Lady • Lindsey Naegle • Cookie Kwan • Wiseguy • Brandine Spuckler • The Yes Guy • Sanjay Nahasapeemapetilon • Blue-haired Lawyer • Judge Roy Snyder • Rich Texan • Luigi Risotto • Old Jewish Man • Mrs. Glick
Media Personalities
Itchy & Scratchy • Kent Brockman • Krusty the Clown • Troy McClure • Sideshow Mel • Rainier Wolfcastle | Arnie Pye • Radioactive Man • Duffman • Bumblebee Man • Bill and Marty • Drederick Tatum • Mr. Teeny • Scott Christian • Booberella • Gabbo • Lurleen Lumpkin • Celebrities
Springfield Elementary School faculty and students
Superintendant Chalmers • Seymour Skinner • Edna Krabappel • Elizabeth Hoover • Groundskeeper Willie • Otto Mann • Lunchlady Doris • Dewey Largo • Dr. J. Loren Pyror • Milhouse Van Houten • Ralph Wiggum • Nelson Muntz • Martin Prince • Rod Flanders • Todd Flanders • Sherri and Terri • Wendell Borton • Database • Jimbo Jones • Kearney Zzyzwicz • Dolph Starbeam • Üter Zörker • Janey Powell • Lewis • Richard • Bashir bin Laden
Springfield Nuclear Power Plant
Charles Montgomery Burns • Waylon Smithers • Carl Carlson • Lenny Leonard • Charlie • Blinky
Villains
Snake Jailbird • Kang & Kodos • Herman • Sideshow Bob • Fat Tony • Frankie the Squealer • Johnny Tightlips • Legs and Louie
Families
The Simpsons • The Bouviers • The Flanders • The Van Houtens • The Wiggums
Miscellaneous
Fictional characters • One-time characters • LGBT characters • Parodied celebrities • Animals