Rumble (WFC)

Rumble is one of three cassettes that Soundwave keeps in his chest.Rumble causes Earthquakes by pounding the ground with his Pile Drivers

Autobot mission 2: Kaon Prision Break
At the end of the level theres a boss battle with Soundwave and he ejects all three of his cassettes he ejects rumble and he says 'First we crack the shell, then we crack the nuts inside' like in the The G1 Movie