- "I understand. One day you will evolve beyond your physical body and on that day, I hope you will pick up the phone."
- ―M5438[source]
M5438 is a being of pure energy. The Planet Express crew met him at The Hip Joint while Amy was trying to help Leela find a date. Leela decided he wasn't right for her and by the end of the night, Amy took him home.
According to Bender's gaydar, M5438 comes from a universe that's big on musical theater (implying that M5438 is homosexual).