Magnus; however, as Prime dies he drops the matrix, which is then caught by Hot Rod who subsequently becomes Rodimus Prime later on in the film. Unicron, a transformer who devours planets, fears its power and recreates a heavily damaged Megatron as Galvatron, as well as Bombshell or Skywarp becoming Cyclonus, Thundercracker becoming Scourge and two other Insecticons becoming Scourge's huntsmen, the Sweeps. Eventually, Rodimus Prime takes out the Matrix and destroys Unicron. In the United Kingdom, the weekly comic book interspliced original material to keep up with U.S. reprints, and The Movie provided much new material. Writer Simon Furman proceeded to expand the continuity with movie spin-offs involving the time travelling Galvatron. The Movie also featured guest voices from Leonard Nimoy as Galvatron, Scatman Crothers as Jazz, Casey Kasem as Cliffjumper, Orson Welles as Unicron and Eric Idle as the leader of the Junkions (Wreck-Gar, though unnamed in the movie). The Transformers theme tune for the film was performed by Lion with "Weird Al" Yankovic adding a song to the soundtrack. The third season followed up The Movie, with the revelation of the Quintessons having used Cybertron as a factory. Their robots rebel, and in time the workers become the Autobots and the soldiers become the Decepticons. (Note: This appears to contradict background presented in the first two seasons of the series.) It is the Autobots who develop transformation. Due to popular demand, Optimus Prime is resurrected at the conclusion of the third season, and the series ended with a three-episode story arc. However, the Japanese broadcast of the series was supplemented with a newly produced OVA, Scramble City, before creating entirely new series to continue the storyline, ignoring the 1987 end of the American series. The extended Japanese run consisted of The Headmasters, Super-God Masterforce, Victory and Zone, then in illustrated magazine form as Battlestars: Return of Convoy and Operation: Combination. Just as the TV series was wrapping up, Marvel continued to expand its continuity. It followed The Movie'''s example by killing Prime and Megatron, albeit in the present day. Dinobot leader Grimlock takes over as Autobot leader. There was a G.I. Joe crossover and the limited series The Transformers: Headmasters, which further expanded the scope to the planet Nebulon. It led on to the main title resurrecting Prime as a Powermaster. In the United Kingdom, the mythology continued to grow. Primus was introduced as the creator of