However, when he protected her from the Headmaster, they were able to reconcile. At first, Sari is initially furious with him for withholding the truth from her. When Sari notices robotic circuitry in her arm, Isaac tells Sari that they need to talk, and in 'Transwarped' it is revealed that he found Sari as a Cybertronian Protoform which patterned itself after him his initial encounter with Sari is also responsible for causing the white streak in his hair. 2, Isaac had to use a Headmaster unit to cut off Starscream's head so he himself could destroy Megatron, though this ultimately fails. In 'Autoboot Camp' he transmits part of Megatron's conversation with Shockwave to the Autobots, alerting them to the presence of the double agent, though the transmission was too blurry to show a clear image of the spy. He is also coerced into creating a dampener system that prevents the Decepticon's energy signatures from being detected by the Autobots. 2, Megatron is holding Sumdac captive, forcing him to help construct a Space Bridge back to Cybertron. After the events of 'Megatron Rising' Pt. Before the event with the Allspark, it can be inferred that Professor Sumdac was going to tell Sari that she was a robot. But when he learned about the Decepticon's true origins, he was horrified and began to regret what he was doing. While he did not like that Megatron added the fire-breathing capability to the Dinobots without telling him about it first, he was sympathetic in understanding that Megatron was simply experimenting with the Earth technology in order to make a new body for himself. He is convinced by Megatron (who until now had been inactive and silent) to keep his existence from his 'friends' (the Autobots) a secret until Megatron can get a new body built unaware of the true origins and motivations of the Decepticon leader. It is through studying Megatron that many of Sumdac's technologies are introduced. Fifty years ago, Isaac found Megatron after he crashed onto Earth. He is incredibly slow on the uptake - Megatron is able to keep him satisfied with flimsy excuses, and when Bulkhead is ordering him around in a transparent attempt to keep him safe from Dirt Boss, even winking and explaining himself in private, Isaac still takes his cruel behavior as genuine.

Organics Human allies Professor Isaac Sumdac ( Tom Kenny) Father of Sari Sumdac, he is a good-natured but a bit of scatter-brained scientist who designs and tests robots at Sumdac Tower.

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