Soundwave and friends.
Top to bottom, left to right: Soundwave, Overkill, Rumble, Frenzy, Wing Thing, Ratbat, Slugfest, Beastbox, Ravage, Buzzsaw, Flipside, Tapemouth, Squawktalk, Glit, Laserbeak, and the Autoscout. Edit: The instructions for the cassettes that didn't c...