First there's Heatwave, the manly leader of the group. Not very fond of humans (especially his partner Kade), but willing to give them a chance thanks to Cody's persuasion. He doesn't like the idea of being assigned to such menial tasks as search-and-rescue missions, as he'd much rather be out in the field of battle helping Optimus and his fellow Autobots in the conflict against the Decepticons. But, his spark's always in the right place, and he's willing to do what he must to ensure that no one gets left behind on his watch. He may be rough around the edges, but inside that serious exterior beats the spark of an Autobot.
Next up is Chase. Being a police car, it's natural that he's into law enforcement and protecting the innocent. He gets along well with Chief Charlie Burns and is always prepped for a mission. He shows a keen interest in helping others and keeping everyone safe, so long as they abide by the law. He also seems to be the quietest and most soft-spoken of the team, never raising his voice or getting all that angry at others. But then again, he's got sirens on his shoulders to make himself heard.
But overall, of the four, Chase is the bot who'd best be described as by-the-book and real team player.Then there's Blades. Blades was a nervous wreck the moment he scanned his helicopter altmode. Back on Cybertron, he was a ground-based vehicle, and so he had never flown before prior to coming to Earth. It doesn't help that he happens to have a great fear of heights, and that he's partnered with the flying-lover Dani (who's apparently quite rough on his joystick. Heyoooo...
). But, he's learning to adjust. In spite of his fears, however, he is glad to be a part of emergency responses again. He sees this new mission as a chance to become useful and to be a part of something important. He may not be comfortable, but he's willing to do what he must to keep his new home safe (since he and the others were unable to save their own home).Finally, there is Boulder. The moment he stepped off the ship and set foot on Earth, he was intrigued. Of all the Rescue Bots, he's the one with the most interest in Earth and its culture. He finds human beings most curious creatures, which just enhances his own curiosity about them. He's a little like Animated and Prime Bulkhead, showing an interest in art and beauty, as he was once hesitant to move some plants from a museum during a mission because it would "destroy the harmonious nature of the plaza's design."
But he means well and knows when to get serious. Being the biggest bot on the team, he's their muscle man and heavy lifter, being able to take more punishment than the others can. Partnering with Graham will hopefully enable him to learn more about Earth, as well as enable Graham to learn more about Cybertron.So, that aside, who's you favorite and why?
For me, it's Heatwave. I like how he's such a sharp contrast to what a character in this kind of show would be like. He's pretty much like what Wolverine would act like as the head of a day care center... except if he were a giant robot.
He's got such a great personality and seems like he'd fit in better in another show than this one. But, that's what makes him so interesting. He seems like he was meant to be in another show and walked onto the set of this one by mistake. So, it's interesting to see this kind of character being the lead role of this kind of show. And partnering him with this show's answer to Flash Thompson, practically his polar opposite, makes for great storytelling and character development yet to come. So, for me, Heatwave is a winner. 
