It's the Scary Old Custodian, Adam Lyon / My Science Project

S1, E4: "It’s the Scary Old Custodian, Adam Lyon" -- It's Howl-o-ween at CDMS and Adam will do just about anything to get away from the incessant howling – including going down to the depths of the school’s scary boiler room to retrieve a file for Principal Pixiefrog. What lurks in this murky netherworld? A scary old custodian left over from the school’s human days and a trick ending courtesy of P. Frog himself! / "My Science Project" -- Jake accidentally ruins Adam’s project for the school Science Fair. To make up for it, Jake has a robot arm implanted in his skull. Soon, Jake and Adam discover the robot arm has a mind of its own!