Super Mammoth in the art picture.
Super Mammoth is the combined form of Ultra Mammoth, Hound (BW), Smokescreen, Trailbreaker, Sky Lynx (BW), Ratchet, Bluestreak, Jazz, Crosshairs, Skids (BW), Mudflap (BW), Huffer, Cliffjumper (BW), Arcee (BW), Springer (BW), Blurr (BW), Silverbolt (Magnaboss), Prowl, Kup (BW), Gears, and Perceptor (BW).