This was the Wrecker for the hint "Thought." I got the idea while working on Topspin to make Perceptor from Backfire, because I believed that his cannon mode could be reworked into a microscope mode. Unlike the other Wreckers I've done so far, Perceptor has a bio: "The Wreckers' top scientist, Perceptor was the one who constructed the Xantium in the first place. An old friend of Q's (using Q because for an upcoming stopmotion he and Wheeljack will be seperate entities) he reconstructed his friend's lab into a mobile one so he could leave Cybertron while he continued researching. Perceptor believes that he has no need to use legs, hence his usual appearance in his 'lab form.' He uses his microscope mode to help observe Earthlings, and he was the one who performed the operation that gave himself his cannon mode. When he is told to go on a mission to rescue a fellow Autobot, Perceptor is eventually convinced by a certain Earthling-boy that he should research on the field instead of his lab. This allows him to realize that the true thrill of researching requires him to use his own two legs, leading him to switch into 'field form.'" Like Backfire, Perceptor transforms into a 3 wheeled motorcycle. The "W" Wrecker has not been guessed yet. Try and guess!