Little is known about Frank's past save that he attended Harriet Tubman High School, where he was held back at least twice. While working at Arby's, Frank was allegedly nicknamed "Zeppo" due to his supposed sense of humor. Frank had a surprisingly large personal fortune which surfaced whenever a large amount of money was required for a particular skit.
TV's Frank's first MST3K episode was episode #201 Rocketship X-M, where, apparently still in his Arby's mindset, he took fast-food orders and, rather to Dr. Forrester's annoyance, almost brought the Satellite of Love down so the crew could "dine in." His last regular appearance was episode #624 Samson vs. the Vampire Women, during which he was assumed into "Second-Banana Heaven", where sidekicks and henchmen could live in a peaceful paradise without fear of reprisal from their cruel masters, by the angel Torgo the White. Dr. Forrester was actually very saddened when Frank left him for Second Banana Heaven, even lamenting his loss in a song entitled "Who Will I Kill?". Frank later appeared to the despondent Forrester as an otherworldly entity and "reconciled" with him, even agreeing to "push the button" one last time. After his departure, he was immortalized in the following year's Mystery Science Theater 3000: The Movie as a door handle on the way to the theater.
Frank also made a guest appearance in the Season 10 opener Soultaker, having gotten a job in the afterlife as a Soultaker after complaining that Second-Banana Heaven was "too political" and that Pat Buttram "had it in" for him. In this appearance, he took the soul of Professor Bobo and played ring toss with it in Castle Forrester. He is also mentioned in episode #822: Overdrawn at the Memory Bank; as the Novacorp chairman, who bears a resemblance to a grossly overweight Frank, appears during the opening credits, Mike says, "Wow! TV's Frank! Hi, Frank!" Servo adding, "He's come up in the world!"
During TV's Frank's tenure, the catchphrase "Push the button, Frank!" was a staple of most shows and the last thing heard before the credits would roll.
Frank usually serves as a foil to his evil boss, Dr. Forrester, and is frequently on the receiving end of many of Forrester's experiments or punishments. He is subjected to many painful deaths but always returns alive and well shortly afterwards; whether this rapid recovery is a quality bestowed upon him by Dr. Forrester or a talent that Frank always possessed (making him uniquely qualified as a mad scientist's guinea pig) was never explained, since it was, after all, "just a show." In the episode "Laserblast", Perl finds his spare head in a box, Dr. Forrester having made Frank's head explode years earlier in "Gunslinger." Occasionally, however, Frank gets revenge on his taskmaster by directly or indirectly causing Forrester harm. One significant example of sidekick payback occurs in episode #619 Red Zone Cuba, when Frank, supposedly owing the mob "50 large", passes Forrester off as himself, earning the evil scientist two severe beatings and an episode-long stint in full-body bandages.
Frank participates in the weekly invention exchanges that are primarily a feature of the Joel Robinson years. His first invention was a rip-off of Joel's invention, the BGC-1.9 drum machine. He repeated his thievery by introducing the "Cheese Phone", which Joel had supposedly recorded in his notes from the '70s. Unlike Forrester (who rarely even remembered Crow and Servo's names), Frank took a liking to Joel (and later Mike) and the 'Bots, who reciprocated his friendship.
In Season 6, Dr. Forrester discovers that his mother, Pearl Forrester, has had a strong friendship with TV's Frank that he'd been unaware of. When she comes to visit, she winds up spending all her time with Frank and neglecting her son, suggesting some of the formative influences that made Dr. Forrester an evil scientist.