Loose ends

Loose ends, plot holes and unanswered questions are issues in the overall plotline of Futurama which are not described. However, some of these may be intended. Since the show was cancelled, a lot of questions remained somewhat unanswered. But, with its return on DVD, these may be explained.

List
This list is incomplete.
 * If 198 billion Popplers were eaten, then Planet Express would have made over $16 billion worth of profit. What happened to this money is unknown.
 * The Professor's incompetence as a CEO could explain the missing profits. It is possible that he squandered the money, is hoarding it, or was so senile that he forgot to sign a contract before selling Fishy Joe the Popplers.
 * The Professor mentions his "fabulous fortune" in A Clone of My Own as well as his "vast riches" in Anthology of Interest I (though that could be non-cannon).
 * He also has to pay for numerous repairs to the Planet Express building and ship, as in The Cryonic Woman, or when the ship must be modified back to its original state, as it does after The Deep South.
 * The Mutant Atomic Supermen are suddenly gone after the basketball game and they are never seen or heard from again.
 * Nibbler states maybe she is the other in reference to Leela, however nothing more about this statement can be explained. It is likely it is a reference to where  mentions that there is another which too is never explained. While never explained, it is likely to assume he is referring to . However, it is doubtful that the writers of Futurama are trying to suggest that Fry and Leela are siblings.
 * It is never stated how Leela got her hearing back after being deafened by the Robot Devil.
 * Amy and Kif appear to have broken up after Amy slept with Zapp and do not seem to have formally reconciled.
 * Given the amount of time between the film and when we next see Kif and Amy together, it is very likely that they just made up off-screen.
 * Fry and Leela seem to have gone back to their just-friends relationship, though it was never explained why despite the events of the previous film.
 * Leela mentions at the end of the film that Fry forgot her as soon as he met Colleen. Why Fry was with Colleen instead of Leela is another question, however.
 * Nibbler seems to have returned after he ate himself, without an explanation or questions being asked.
 * At the end, Mom is revealed to possess a clone of.
 * Given the amount of time between the film and when we next see Kif and Amy together, it is very likely that they just made up off-screen.
 * Fry and Leela seem to have gone back to their just-friends relationship, though it was never explained why despite the events of the previous film.
 * Leela mentions at the end of the film that Fry forgot her as soon as he met Colleen. Why Fry was with Colleen instead of Leela is another question, however.
 * Nibbler seems to have returned after he ate himself, without an explanation or questions being asked.
 * At the end, Mom is revealed to possess a clone of.
 * At the end, Mom is revealed to possess a clone of.
 * At the end, Mom is revealed to possess a clone of.