The Phantom Cruiser disappears when it is hit with the freeze ray.
Space Ghost's gloves are red in the last scene when they should be white.
In the scene where Metallus holds Jace and Jan hostage, he is just a little bigger than them. In the scene where Space Ghost returns and blasts a hole in the cruiser, Metallus is much larger than Jace and Jan.
The rocket that Space Ghost is bound in is larger when it is first shown and then smaller when Space Ghost blasts his way out.
Creature King's eyes change color slightly a couple of times.
Jace: Space Ghost! Look! Metallus's robots!
Space Ghost: That explosion. It must have caused them to home in on his cruiser.
(they hit the ship and cause a large explosion)
Jan: I guess that's the end of Metallus.
Space Ghost: I wouldn't be too sure. He always manages to survive somehow.
Metallus: And now for your final flight, Space Ghost.
Metallus: (transmitting) Space Ghost! Surrender!
Space Ghost: Never.
Metallus: Perhaps this will change your mind. (he points a laser pistol at Jace and Jan)
Space Ghost: Jan! Jace! Alright Metallus, you win.
Jan: Don't do it, Space Ghost.
Space Ghost: I'm sorry, Jan. I can't risk you getting hurt.
Metallus: So, those space twins are using their inviso power, but I will use them to bring Space Ghost crawling to me on his knees.
Jace: There's Metallus's cruiser. We've got to find a way in.
Jace: (Sees large blip on radar screen) What in blazes could it be, Space Ghost?!
Space Ghost: It's Metallus's fleet of super robots.
Metallus: (transmitting) That's right, Space Ghost. And they're coming to destroy you once and for all!
Metallus: Then it is agreed. We vow the complete and final destruction of our mortal enemy, Space Ghost.
Narrator: Somewhere in the outer reaches of space on this dark uncharted planet, a meeting is taking place. Present are the most treacherous and evil villains of the galaxy. Metallus, Spider Woman, Creature King, Brak, Zorak, and Moltar. Their purpose, to form the powerful Council of Doom.
this episode is the best so far in my opion