Answer by taking a quote from the following article:

Eric Boucher was born in Boulder, Colorado, the son of Virginia (nee Parker), a librarian, and Stanley Wayne Boucher, a psychiatric social worker and poet. He had a sister, Julie J. Boucher, the Associate Director of the Library Research Service at the Colorado State Library (who died in a mountain-climbing accident on October 12, 1996). As a child, Eric developed an interest in international politics that was encouraged by his parents. An avid news watcher, one of his earliest memories was of the John F. Kennedy assassination.

In June 1979, Biafra co-founded the record label Alternative Tentacles, with which the Dead Kennedys released their first single, "California Uber Alles". The label was created to allow the band to release albums without having to deal with pressure from major labels to change their music, although the major labels were not willing to sign the band due to their songs being deemed too controversial. After dealing with Cherry Red in the UK and IRS Records in the US for their first album Fresh Fruit for Rotting Vegetables, the band released all later albums, and later pressings of Fresh Fruit on Alternative Tentacles. The exception being live albums released after the band's break-up, which the other band members compiled from recordings in the band partnership's vaults without Biafra's input or endorsement.. Biafra has been the owner of the company since its founding, though he does not receive a salary for his position; Biafra has referred to his position in the company as "absentee thoughtlord".  Biafra is an ardent collector of unusual vinyl records of all kinds, from 1950s and 1960s ethno-pop recordings by the likes of Les Baxter and Esquivel to vanity pressings that have circulated regionally, to German crooner Heino (for whom he would later participate in the documentary Heino: Made In Germany); he cites his always growing collection as one of his biggest musical influences. In 1993 he gave an interview to RE/Search Publications for their second Incredibly Strange Music book focusing primarily on these records, and later participated in a two-part episode of Fuse TV's program Crate Diggers on the same subject. His interest in such recordings, often categorized as outsider music, led to his discovery of the prolific (and schizophrenic) singer/songwriter/artist Wesley Willis, whom he signed to Alternative Tentacles in 1994, preceding Willis' major label deal with American Recordings. His collection grew so large that on October 1, 2005, Biafra donated a portion of his collection to an annual yard sale co-promoted by Alternative Tentacles and held at their warehouse in Emeryville, California.  In 2006, along with Alternative Tentacles employee and The Frisk lead singer Jesse Luscious, Biafra began co-hosting The Alternative Tentacles Batcast, a downloadable podcast hosted by alternativetentacles.com. The show primarily focuses on interviews with artists and bands that are currently signed to the Alternative Tentacles label, although there are also occasional episodes where Biafra devoted the show to answering fan questions.

who did he co-found it with?
Biafra has been the owner of the company since its founding,