Fan Casting Family Guy: Road Through The Multiverse

Brian and Stewie are spending time at home when Bertram appears out of nowhere in a flash of light. Stewie is appalled by this, as he had killed Bertram in the past. Bertram responds by explaining that he is from another reality where Stewie never killed him, and expresses his disgust that there exists a universe without him in it. Bertram then exclaims that because of this, he will build an army from all the depths of the Multiverse, and use it destroy Stewie's universe entirely. After Bertram uses his remote to travel out of their realm, Stewie takes out his own Multiverse remote and declares that he and Brian will stop Bertram at all costs.