The trivia item below may give away important plot points.
We already know that the wise Professor Hubert J. Farnsworth used to work for Mom (her name is revealed for the only time (I believe) in the series) whose name is Carol. We also learn that Dr. John (Johnny) Zoidburg used to work for Carol (Mom). Dr. Zoidberg and Mom are on a first name basis. She offered him great wealth, but due to Dr. Z.'s and Professor Farnsworth's deep friendship and bonding, as well as the agreement made between the two of them, Dr. Zoidburg gave up a life of wealth, his own lab, and a full medical staff to live in a dumpster.