Energon Highwire (& Kicker)

Love them or loathe them, each part of the Unicron Trilogy brought something new-ish to the TransFormers mix. Armada introduced Mini-Cons, and used them to activate features on the larger robots, Galaxy Force adapted this functionality for use with 'keys'... and, wedged in between, Energon did virtually nothing with the Mini-Cons other than, in cases like Armada's High Wire, upgrade them.

Thus, High Wire became Highwire, a Scout Class (or equivalent) figure that came with an action figure of Kicker, one of the human characters from the show. But while the Japanese version of Kicker was based on the Microman figures, the US/UK release was closer to a GI Joe figure. They make for a strange set, not least because they're not quite in scale, but they do work well enough together.