List of Transformers: Animated episodes

List of Transformers: Animated episodes. An episode list for the first two seasons has been released through Cartoon Network's website. The series began with "Transform and Roll Out", a 90-minute movie special later broken up into three episodes for re-runs. Following the debut of the movie on December 26, 2007, the series properly began on January 5, 2008. The series returned with the third season on March 14, 2009, in the US and Canada.

The first season (consisting of sixteen episodes) began on December 26, 2007, with its three-part premiere "Transform and Roll Out", and ended on April 5, 2008, with "Megatron Rising, Part 2". The season's main theme following "Transform and Roll Out" centered primarily around Megatron's return after his defeat during his first battle with Optimus Prime. Meanwhile, the Autobots (Optimus, Bumblebee, Ratchet, Prowl, and Bulkhead) learn more about 22nd-century Earth from eight-year-old human Sari Sumdac, who has an encounter with the AllSpark that transforms her security key into a mystical Cybertronian artifact with vast powers. At the same time, the Autobots battle members of Megatron's old crew, including Starscream, Blackarachnia, Lugnut, and Blitzwing, while befriending some of the local humans, including Sari, her father, Professor Isaac Sumdac (who is tricked into helping Megatron) and machine-hating police captain Carmine Fanzone.

A small repair crew, consisting of team leader Optimus Prime, hotshot Bumblebee, lumbering Bulkhead, ninja loner Prowl, and grumpy Cybertronian War veteran and medic Ratchet, find the Allspark among meteors when clearing a space bridge in an asteroid field. The crew is attacked by Decepticons including Megatron and Starscream, and are refused assistance from Cybertron. Starscream betrays Megatron; an explosion damages Megatron and he crashes on Earth along with the Autobot ship.

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