Transformers

Known to humans as Transformers, the Cybertronians are a species of sentient, robotic organisms from the planet of Cybertron in the Transformers Universe. The species has an ability to transform at will, rearranging their component parts from a robotic, humanoid mode into an alternate form; vehicles, weapons, machinery, or animals.

They were created by Unicron and Primus: immortal and eternal beings with immense power. Cybertronians went through several periods of peace and oppression over millions of 'stellar cycles'. Eventually a Great War between the Autobots and Decepticons began, thus leading towards great disaster on Cybertron.

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Transformer