Shortly after they arrived on Gigantion and there Megatron was upgraded into Galvatron, Soundwave abandoned the Decepticons, and joined up with his counterpart, Sideways.
Singkatnya setelah mereka tiba di Gigantion dan kemudian Megatron berubah menjadi Galvatron, Soundwave dilupakan oleh Decepticons, dan kemudian bergabung bersama rekannya, Sideways.