Mail-away Autobots from 1984/5. There were three, and you never knew which one you were going to get. They came in plain boxes and plastic bags, so there was never any official Hasbro box art for them. However, like many other Transformers, they were originally Diaclone toys. The illustrious Scott Gray sent these in: the original Diaclone box art.
Bumper, perhaps more commonly known as Bumblejumper, was never officially released in America, but he occasionally showed up packaged on a Bumblebee or Cliffjumper card. He is a completely unique mold similar but not identical to Bumblebee and Cliffjumper: Bumper resembles a Mazda Familia 1500XG, whereas Bumblebee was a Volkswagen Beetle and Cliffjumper was a Porsche 944. All three figures come from the Microman series, one of the toylines that was a predecessor and contributor to the Transformers line. The names "Bumblejumper" and "Bumper" come from a hybridization by the fans of the names "Bumblebee" and "Cliffjumper", stemming from its appearance on their two cards, and the fact that originally some mistook the toy for a blend and/or recoloring of the two molds. Bumper was only released officially in Brazil (under the name Sedan and in various colors) and that's where this artwork came from.
From the KRONOFORM Collection!
Transforms from LCD watch to vehicle to robot. I even think I had Kaltor as a kid, when I was too dumb to save the boxes. Oh well.