Dinobots in the art picture.
The Dinobots are a rowdy, arrogant, lowbrow, disobedient band of warriors that some Autobots would rather scrap than deal with. They're also one of the most devastatingly powerful and close-knit combat units in the Autobot army, being incredibly powerful in robot mode and taking alternate modes based on dinosaurs, the most powerful creatures to ever roam the Earth.
Most of them like Optimus Prime, so whether or not they follow the Autobot leader's orders depends on what those orders are. This attitude extends to the rest of the Autobot army, with most being viewed as too weak or cowardly to take the steps needed to get the nastier jobs done. Only a handful of individuals are viewed by the Dinobots as true allies and even they don't really understand them. This attitude has very much pushed the Dinobots to the fringes of Autobot society. This has resulted in an extremely powerful sense of camaraderie and friendship among the team. Few Autobots are closer. As so many battered, bruised and beaten Decepticons can attest, if you confront one Dinobot, you confront them all.