Episodes that have at least one sequel. Here are hints to find sequels:
- Look for patterns in the episode. If they have a character on one episode (like Outer Space Rover) that appears in the other (Urfo Returns), they are considered sequels.
- Episodes with 'again' or 'returns' (or 'return of the <insert name here>') are considered sequels.
- They are NOT sequels when a topic is the same as another episode (this is NOT a sequel: It's the Mad Mad World of Dr. McWolf following McWolfenstein yet they both talk about mad scientists).
Episodes with more than one sequels should be added in the episodes with more than one sequel category.