The Velocitronian twins Skidmarx and Mudflap came from some of the...let's say not-so stellar parts of the original Velocitron, living with their grandfather. But despite that, the duo are good little bots. Chaoticly good, but still good. Skidmarx is level-headed and smart for a kid his age. But his kinda pessimistic and slightly misanthropic due to all the conflict Cybertron and all the other Cybertronian colonies went through. Mudflap is slightly younger & is more street-smart and resourceful. However, he's incredibly reckless, often getting himself and/or his brother into trouble. The two may argue every now and then, but at the end of the day, they can do anything when they put their minds to it. As the young speedy duo say, "Nobody messes with the twins!"!