Transformers is an entertainment franchise produced by American Hasbro and Japanese Takara Tomy toy companies. Initially a line of transforming toys rebranded from Takara's Diaclone and Microman toylines, the franchise began in 1984 with the Transformers toy line, and centers on factions of transforming alien robots in an endless struggle for dominance or eventual peace. In its decades-long history, the franchise has expanded to encompass comic books, animation, video games and films. The term "Generation 1" covers both the animated television series The Transformers and the comic book series of the same name, which are further divided into Japanese and British spin-offs, respectively. Sequels followed, such as the Generation 2 comic book and Beast Wars TV series, which became its own mini-universe. Generation 1 characters underwent two reboots with Dreamwave in 2001 and IDW Publishing in 2005, also as a remastered series. There have been other incarnations of the story based on different toy lines during and after the 20th-Century. The first was the Robots in Disguise series, followed by three shows that constitute a single universe called the "Unicron Trilogy".