Phoebe's an Alien?Edit
Arnold finds out that Phoebe is actually an alien from a planet called Minderia.
Arnold gets sent into a dream world set in the Middle Ages, where he has to defeat an evil king and save the kingdom of Hill Wood.
- In "Phoebe's An Alien?", Arnold is told to collect the rent again. ("Gerald Comes Over")
- In "Arnold's Dream", the Evil King is Mr. Scheck from "Arnold Saves the Neighborhood".
- The plot of "Phoebe's an Alien?" could be a reference to the Hey Arnold fanfic "Project Phi-B"
- "Phoebe's an Alien": When Arnold says "For the last time Mr. Potts, you HAVE to pay the rent like everyone else.", his shirt is green instead of blue.