Challenge of the SuperFriends

When Superman informs the other Superfriends at the Hall of Justice that he is going to the swamp to find the other heroes already there, Green Lantern can be seen among those heroes still at the Hall of Justice, however Green Lantern had already gone to the swamp and have been captured by the Legion of Doom at this point in the episode.

When Green Lantern and Hawkman are pulled underground by the tree branches, Green Lantern speaks with Hawkman's voice when he says "I can't pull free!"

In the shot where the zombies tear a hole in the wall of the Hall of Doom, the background appears to be of an urban street.

Just after Green Lantern and Hawkman find the BatBuggy in the swamp and Sinestro confronts them, Hawkman's wings disappear.

When Black Manta is observing the zombies penetrating the Hall of Doom's defenses on the monitor, his helmet can briefly be seen as dark-colored, instead of its usual light blue.

Aquaman is not shown when the Superfriends were captured and put in those tubes.