Transformers: Generation 1 was a children’s toy line that ran from 1984 to 1991 and was produced by Hasbro. It was a line of toy robots that could change into an alternate form (vehicles such as cars and planes, miniature guns or cassettes, monsters, and even dinosaurs) by moving parts into other places, and it was the first line of toys produced for the successful Transformers toy and entertainment franchise. The line was originally called The Transformers. Hasbro eventually adopted the term “Generation 1” to refer to any toy produced in that era.
Two characters – each the greatest leader of his side, became the most iconic representatives of the series: Optimus Prime of the Autobots and Megatron of the Decepticons. After the featured film, Megatron was reformed as Galvatron, and Optimus Prime was replaced for a time by Rodimus Prime, only to return later on. Both Optimus Prime and Megatron continued to appear in one form or another in subsequent Transformers series, where they maintained their leadership roles.
The toys made use of molds and designs primarily from the Microman and Diaclone lines. The 1985 toyline introduced the idea of special subgroup teams like the Dinobots, Constructicons and Insecticons. Toward the end of the animated series’ second season, several characters from the 1986 line were introduced, particularly the Combiner teams.