Short answers, pulled from the story.
Troma Entertainment was founded in 1974 by Lloyd Kaufman and Michael Herz. The two co-founders also invented the company name, with Herz reportedly trying to think of the most ugly-sounding word ever uttered by man.
The Toxic Avenger, released in 1984, is Troma's most popular film and the company's official mascot. It spawned multiple sequels, an animated television program, and a stage musical with music by David Bryan, keyboardist of Bon Jovi.
Troma's catalog includes early appearances by Oliver Stone in The Battle of Love's Return (1971), Kevin Costner in Sizzle Beach, U.S.A. (1981), Samuel L. Jackson in Def by Temptation (1990), James Gunn in Tromeo and Juliet (1996), and Trey Parker and Matt Stone in Cannibal! The Musical (1993), among others.
Tromaville is a fictional New Jersey city described as the Toxic Chemical Capital of the World. Films set there include the Toxic Avenger series, the Class of Nuke 'Em High series, Tromeo and Juliet, Poultrygeist: Night of the Chicken Dead, and Father's Day, among others.
Tromadance is an annual independent film festival originally held in Park City, Utah, during the same period as the Sundance Festival. After 2009 it moved to Asbury Park, New Jersey, then to New York City in 2014, and since 2020 it has been held at The Mahoning Drive-In Theater.
Yes. Troma launched its own streaming service called Troma Now in 2015. It offers a free trial month followed by a monthly fee of US$4.99.