Transformers: Energon (2004-2005) Opening (HD)

Transformers: Energon is the second series co-produced between the American toy company Hasbro and their Japanese counterpart Takara. It was the second part of the Unicron Trilogy, and aired in the U.S. on Cartoon Network. The series ran for 51 episodes, from January 31, 2004 to June 1, 2005.