Max Graham (voiced by Guy Maxtone-Graham) is the leader of the Positive Acting Teens (P. A. T.), a group of dorky teenage boys that he is indoctrinating with fundamentalist Evangelical propaganda, and the father of one of their members (their other members include Ryan and later Stewart Stevenson (in "Dumb Design" only). His most prominent appearances are in "Patsies" and "Dumb Design". A character of identical appearance and voice is seen returning home after a trip with his family after B&B ring the doorbell twice and run away, then no one answers ("Ding Dong Ditch"). He also appears as a customer at Burger World who is left waiting at the counter while Butt-Head tries to injure Beavis to get worker's compensation money ("Work Is Death"). He appears in the crowd in front of Highland High in "Beavis and Butt-Head Are Dead". A character of identical appearance and voice drives the Municipal Waste Management van past B&Bs house looking for a sewage leak after they break their sewer line digging for oil in the yard ("Beaverly Buttbillies"). A character of identical appearance and voice is also seen taking his young son trick-or-treating ("Bungholio: Lord of the Harvest").
Protagonists: Beavis / Cornholio / Old · Butt-Head / Old
Recurring Characters: Tom Anderson · Stewart Stevenson · Todd · Burger World Manager (2022) · Mrs. Stevenson · Mr. Stevenson · Lolita and Tanqueray · Maxi-Mart Clerk
Highland High School: David Van Driessen · Daria Morgendorffer · Principal McVicker · Coach Buzzcut · Spanish Teacher · Ms. Tress · School Nurse · Kimberly · Cassandra · Earl · Martin (thin) · Mrs. Dickey · Gina · Dreama · Dean Zunker · Punk Girl · Wilbur · Martin (gifted student) · JD · Glennis · Cody · Audrey · Mrs. Ortiz · Security Guard · Gym Teacher · Tommy · "Spare Me" Girls · Amy Asskowitz · Audrey's Friend · Dick Gaylord · School Psychologist · Ms. Jenkins · Jim the Substitute · Woodshop Teacher · Ryan · Librarian · Unnamed Female Teacher (Citizen Butt-Head)
Minor Characters: Marcie Anderson · Clark Cobb · Dave · Harry Sachz · Homeless Man · Madame Blavatsky · Redneck Lady · Crazy Farmer · Billy Bob · Slade · Psycho · Principal Brown · President Bill Clinton · Concert Girls · Hamid · Sterculius, the Roman God of Feces · St. Peter · Unnamed Police Officers · Mr. Manners · Frog · Harry Buddisker · Hiro · Mistress Cora Anthrax · Biker Lady · Fork Injury Guy · Peter Small · Killer · Second Killer · Ross and Harlan · Ellen · Keith · Case Worker · Rabid Ron · Lydia · Katya · Hairdresser · McVicker's Family · Beavis' Imaginary Children · Butt-Head's Imaginary Children · Gus Baker · Leroy · Fire · Jesus Christ · Ganesha · Buddha · Zeus · Bill Gates · Bill (Steamroller) · Linda · Joan · Mall Girls · Elevator Chick · Joe Adler · Suspicious Chick · Maya Kanigher · Megan · Old Woman (Couch-Fishing) · Cop (Couch-Fishing) · Cop (Pipe of Doom) · Cop (Screamers) · Mechanic · Slob · Priest · Rabbi · Jasmine · Captain Dick Jackman · Charlie the Angel · Misty Lou · Lucas · Dennis · Female Judge · Screaming Guy · Black Female Cop · Corvair Owner · Jim Baxley · Snake Woman · Urologist · Dr. Fisk · Dr. Leibowitz · Vet Receptionist · Wrong Mr. Anderson · Crystal · Sapphire · Gary · Shawna · Suspicious Chick · Debra Shea · Trish Burbee · Tiffany the Rubber Band Lady · Max Graham · Veterinarian · Victoria's Dad · Ric Aaron Joseph · Receptionist (Pumping Iron)
Movie Characters: Muddy Grimes · Dallas Grimes · ATF Agent Bork · ATF Agent Flemming · FBI Agent Hurly · Old Woman · Motley Crue Roadies · Judge · Serena Ryan · Jim Hartson · Mattison · Empress Beavis · Emperor Butt-Head
Smart Characters: Smart Beavis · Smart Butt-Head · Smart Daria · Smart McVicker · Smart Buzzcut · Smart Van Driessen · Smart Todd · Smart Judge · Smart Mrs. Stevenson
Mentioned Characters: Shirley Beavis · Tom Anderson's Son · Tom Anderson's Father