Transformers Universe MUX
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In 1986, a few of the Autobots managed to contact Cybertron and requested reinforcements to assist G.I. Joe in providing security to planet Earth.

Ultra Magnus travelled to Earth to help assist the Autobots until Optimus Prime was repaired. While on Earth he was rebuilt into a Rolling Thunder.

Rolling Thunder mode

That same year Sparkplug reluctantly committed Spike to Seattle Memorial Psychiatric Hospital, where he stayed for almost seventeen years.

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