Mega-Dinobot is the combined form of the heavy-assault Autobots Grimlock and Swoop. Though the two greatly enjoy splitting up to confuse and crush the Decepticons, Mega-Dinobot mode is perfect for taking out anyone who managed to survive the initial onslaught.
- Grimlock & Swoop (Mega, 2005)
- Mega-Dinobot combines the individuals Grimlock and Swoop into a single robot mode. Both components came in a single Mega-class multi-pack.
- The Grimlock/Swoop set was originally intended to be released in the Universe line, as the original Generation One incarnations. However, a variety of factors shuffled the set into Energon and new-character-dom.
- This set was not "mech-designed" or engineered by Takara employees, a rarity for normal-series Transformers toys.
- This set mercifully bears no relation to the other Dinobot-combiner storyline, The Beast Within.
- Mega-Dinobot's robot mode face has molded-in teeth similar to War Within Grimlock's.