Transformers: Energon
Years after "Transformers Armada", the Autobots continue to battle the Decepticons to prevent the resurrection of Unicron.
Starring Junichi Endo, Koji Yusa, Katsuyuki Konishi, Nobuo Tobita, Nobutoshi Canna, 森 悠也, Mitsuo Iwata, Kohsuke Toriumi, Nobuyuki Hiyama, Isshin Chiba
Watch "Transformers: Energon" on Tubi TV released in 2004. It's a action & adventure and animation show, and has a rating of 5.8 out of 10 from Imdb which is fairly okay for this kind of show, and is currently available to watch for free.