Energon stars are vaguely round, flattened bodies with protrusions that form a rough star-shape. They are transparent red or green, because it looks like delicious candy. Those produced by the Terrorcons are green, but the Omnicons' products are red, because the good guys get the yummy red ones. Energon stars produced by using Super Energon are transparent blue and are used by the combiners: Superion Maximus, Constructicon Maximus, and Bruticus Maximus.