Allen and Robbie protest for better food.
Allen is sucked into his favorite show.
Allen's burping causes time travel.
Allen wants to save a tree.
Allen is caught on film.
Allen tries to understand emotions.
Hamilton thinks he has super powers.
The Stevenson family unearths a time capsule.
Allen's energy transfers into Robbie's.
Gail is left in charge.
Allen is split between his human and alien forms.
The kids hack into the school computer.
The family plans to move, leaving no place for Allen.
Allen and Hamilton search for the perfect inner tube for a pool party.
Allen energizes Josh's baseball glove to help him in gym class.
Creative differences threaten Robbie and Erika's friendship.
Allen's gardening service teaches him about the cycles of life.
Allen unknowingly befriends a pair of bike thieves.
Allen learns his 'human suit' is a different color.
A horror movie teaches Allen that people like to be scared.
An April Fool's trick is planned for Allen's first dance.
A creature living in the harbor communicates with Allen.
Allen's interest in travel results in Manfred's concern.
Space bugs from the museum invade the house and multiply.
Financial problems at home stress Robbie at school and socially.
Robbie transforms her room as a distraction when her parents separate.
A genealogy assignment makes Allen's teacher suspicious.
Allen, Josh, and Robbie need the key to the portal.
Allen closes the portal to save Josh, sacrificing his way home.
Allen must pass a course or lose his slot on the wrestling team.
The bus carrying the wrestling team on an overnight trip crashes.
Allen turns a piece of mold into a clone of Moose.
Allen is caught in the middle of a feud.
A neighborhood ghost has something in common with Allen.
An alien parasite infesting Grandma Irma's dog could kill everyone.
Allen must pass four challenges or lose his powers.
The Trykloids intercept Allen's message home.
Allen sends a signal home, which is tracked by Shaw and Berg.
Part of a map in a Trykloid's lair could show Allen the way home.
Allen energizes the computer, and it goes out of control.
Robbie must destroy a meteor that will crash into Earth.
While Allen is alone for the weekend, the house is burglarized.
Allen joins the wrestling team.
Allen's first bout with a cold is nearly fatal.
Allen searches for the perfect Christmas gift for Robbie, but finds himself in a store without money.
A Gronpoly lands on Earth and wreaks havoc.
Robbie's well-intentioned actions start an avalanche.
Robbie and Josh plan to enroll Allen in school.
An alien stowaway becomes stranded on Earth.