Voir Transformers Robots in Disguise, Vol. 3 - Episode 10

Fixit, vowing to repair the GroundBridge once and for all, errs in his efforts and winds up creating a portal that releases Soundwave and Laserbeak from the Shadow Zone! The legendary Decepticons immediately throw Bumblebee through the portal as it closes. Bee can only watch helplessly as Grimlock and Strongarm fall before the fearsome villains, who then begin constructing a beacon that might well draw all the Decepticons in the area to the Scrapyard! But Fixit redeems himself, with Russell’s and Denny’s help, repairing the GroundBridge so it reopens the portal to the Shadow Zone. Bumblebee escapes, and joins Grimlock and Strongarm in sending Soundwave and Laserbeak back to their interdimensional prison.