A Sitcom Movie (Parody of all 90s sitcoms mostly "Seinfeld")

A "minor celeb" stand-up comedian who is often depicted as "the voice of reason" amid the general insanity generated by the people in his world. The in-show character is a mild germophobe and neat freak as well as an avid SpongeBob SquarePants, Denver Nuggets, and breakfast cereal fan. Jon's apartment is the center of a world visited by his eccentric friends and a focus of the show

Cosmo Krämer, Jon's loyal neighbour. His trademarks include his humorous upright pompadour hairstyle, vintage clothes, and energetic sliding bursts through Jon's apartment door. Krämer was heavily based on a neighbour of David's during his amateur comedic years in Las Vegas. At times, he appears naïve, uneducated, and impulsive, and at other times, quick-witted, helpful, and empathetic; similarly he is exaggeratedly successful, socially, with his charisma and laid-back personality. This is seen in his success with women and employers. He has been described as a "hipster doofus". Although he never holds a steady job, he is rarely short of money and frequently invents wacky schemes that often work at first but eventually fail. Krämer's friends with Newman, and they work well together despite their differences

Elaine Beneš, Jon's ex-girlfriend and later friend. Generally depicted as prideful, she is friendly, while also being ambitious, somewhat cunning, and resourceful. She's occasionally depicted as vegetarian or pescatarian, without the strength of conviction to keep this up regularly. She sometimes tends to be too honest with people (usually by losing her temper), which often gets her into trouble. She usually gets caught up in her boyfriends' quirks, eccentric employers' unusual behaviours and idiosyncrasies, and the maladjustment of total strangers. She tends to make poor choices in men she dates and is often overly reactive. She's an art teacher at Booker T. Washington High School for the Performing and Visual Arts, a magnet high school. Elaine is popularly described as an amalgamation of David's and Lovitz's girlfriends during their early days in Las Vegas as struggling comedians

George Costanza, George's Jerry's best friend (He's millennial and Jon's a boomer). He's intelligent, wise, witty, and semi-jealous of others' achievements. He's depicted as a loser who's perpetually lacking confidence about his capabilities. The character of George was based on Larry David himself

Jim (Jon's landlord)

Rabbi Mary Finkleberg, AKA "Momala", the rabbi who leads the children's home where Jon grew up

Melvis, an old friend/father figure of Jon, who suggests he raises the money to save the children's home

Lincoln Steelflex, Jon's agent

Jennette Uccelllo, Jon's Agent

Marco Guzzoni (Pasta Nazi) the Pasta Nazi's a pasta chef who often denied customers his delicious Italian food for the slightest misbehaviour with the admonition, "Pasta La Vista, Baby!"

Dante Guzzoni (Pasta Nazi's son)

Jolanda Guzzoni (Pasta Nazi's daughter)

Señor Poopus (Radio DJ)

Salesman, who sells Elaine an antique piano

René, a hostile Austin Powers-look alike who accost Cosmo Krämer and George Costanza

Pee-wee, a hostile lady accost Cosmo Krämer and George Costanza

Yvonne, another hostile lady accost Cosmo Krämer and George Costanza

Ricarda, 3rd hostile lady accost Cosmo Krämer and George Costanza and René main girl

Courtney, 4th hostile lady accost Cosmo Krämer and George Costanza

Dusty, George's pet Pegasus (Donkey form) and George's transportation

Frank Costanza, George's father. Very quick to pride. He's an executive of the Luxor Hotel and Casino. He's also a former paramedic in the Army and learned to speak Vietnamese while serving in the Vietnam War since 1974-1975. He invents the holiday Festivus as a reaction to the cultural commercialism of Christmas

Estelle Costanza, George's highly loyal and artistic mother. She constantly squabbles with Frank about his actions but is the closest thing to reason in the Costanza household. Enjoys playing Mahjong

Aaron Costanza, George's older brother who's also wise like him, and the lead guitarist in his band Underpants. He usually is noted for being snarky

Monroe Costanza, George's older sister and Aaron's twin sister, she's cheerleader at Booker T. Washington High School for the Performing and Visual Arts

Joey Costanza, George's young sister who's kind of like him in any way

Pedro, the Costanza butler at the Luxor, he's Guatemalan and wears a monocle

Maria, a Costanza maid and Pedro's sister

Trooper Moon, one of the cops who follows Jon from the start

Trooper Daniel, Mount's partner and the other cop who follows Jake and Elwood from the start

Beverly Mercer, a parole officer assisting the police in their hunt for Jon Lovitz

Andi Porterfield, George's Girlfriend