Rollbar always gives 110%. He's neither very strong nor very fast, but he's got heart, and a vast arsenal of corny, macho cliches to pepper his speech. Though the other Throttlebots are inclined to roll their optical sensors when he starts laying the Cybertronian bullslag on too thickly, his gung-ho attitude has earned the respect of them all, and when the higher-ranking veteran Goldbug is not around, Rollbar is the acting leader of his very democratic team.
Rollbar makes good use of his low power in vehicle mode. He is a rubber-tired acrobat, able to jump like a cybergoat and run like a turbodeer. This is fortunate; he has little or no firepower, and if caught in the open he has little choice but to run away. He does have radiation and chemical sensors to assist his tracking missions, and audio-video equipment to record his findings, or perhaps the big game.
Rollbar may not have what it takes to make the big plays, but he's still an opponent to be reckoned with. You have to give him that much credit.
His alt-mode is a Jeep Wrangler.