When Lunella finds a nasty comment on her Moon Girl social media page, her fixation on the troll threatens to take over her life.

When Lunella runs the rink for a night, she agrees to Casey's get-rich-quick scheme, which threatens Moon Girl’s reputation and her family's beloved business.

When Lunella loses a game of chess against a supercomputer, her obsession with winning drives the frustrated computer to program every device in the school to attack her.

When Lunella creates a chemical to change her hair, she accidentally turns her mane into a vengeful villain that vows to ruin her.

The Beyonder gloms onto Lunella to learn about humanity, just as she's struggling to win a big science competition.

When Lunella seemingly gets hurt and is stuck in bed, Casey must step in as Moon Girl for the day.

Moon Girl fights to save the LES from changing.

Hoping to help Casey have an epic bat mitzvah, Lunella makes an appearance as Moon Girl, which ultimately brings out the worst in Casey and causes a rift in their friendship.

Lunella must confront her childhood fear, the Coney Island Funhouse, to save Mimi from The Beyonder.

Moon Girl faces her greatest challenge yet and puts everything on the line.

When Moon Girl and The Beyonder become stranded on a desolate alien planet, the two set out to find a rumored black hole in hopes of getting home.

When Devil Dinosaur eats a dangerous Moon Girl gadget, Lunella and Casey must shrink themselves to retrieve it.

When Moon Girl must transport Quickwhip to S.H.I.E.L.D., keeping the criminal in custody becomes harder than she imagined.

When The Beyonder gives an arcade machine the ability to grant wishes, Lunella is pumped to use it.