Lord Peel captures the Monkeys and intends to make them pay for turning him from a mild-mannered alien who happens to look a lot like a banana, into an embittered super villain obsessed with revenge.

Nefarious's latest evil invention gives him control over Wally's tail.

After challenging the undefeated Space Gorillas to a match on the popular game show "Galactic Laser Blast!", Gus decides the only way the Monkeys can win is to bring in a ringer—YAY-OK.

A fitting for new space-suits reveals that Gus's tail has grown just enough to classify him as a rare long-tailed monkey, which attracts Gamester X, an alien determined to add Gus to his collection.

For Gus and Wally, scary equals funny, and they perform a series of pranks on each other to illustrate this comedic theory for YAY-OK. Not to be outdone, YAY-OK puts together a terrifying joke of his own.

It is Inspection Day, and the Rocket Monkeys are far from prepared. Gus thinks it will be easy enough to talk his way out of a bad report, but Wally's unhinged behavior threatens to interfere.

Wally finally gets his own pet: Trixie, a toothy beast with an appetite for EVERYTHING, from the monkeys' food supply to the ship itself. As much as it hurts Wally, insatiable Trixie must be stopped.

Gus and Wally have a surprise for YAY-OK: they have located his estranged father. But YAY-OK has mixed emotions, as it turns out his dad is actually a doomsday device that had been powered-down for the good of all mankind.

Tired of Wally always touching his stuff, Gus gets his brother to promise "paws off." But when Wally's faced with Gus's Deep Space Dave laboratory play set, the temptation may prove too much.

Gus and Wally are shocked when their mom reveals her new suitor, Lord Peel. To prove he is a changed man, Banana-dude insists on highly hazardous, monkey-endangering fun.

An unfortunate haircutting accident reveals the crown-shaped royal birthmark of Eld under Wally's fur and his royal destiny as the rescuer of the frozen Princess Von Monkey.

Mission: escort criminal mastermind Monkevil to the prison on Alfatraz 8. No problem, until their prisoner turns out to be a beautiful female monkey who soon has Gus and Wally fighting for her love.

GASI has a new recruit: Monkevil, former super villain, and Gus and Wally's long standing crush. Though she excels during training, YAY-OK suspects that she has returned to her life of crime.

Tired of always being assigned the lamest missions, Gus and Wally seek out lost pirate treasure.

A batch of toxic bananas has infiltrated the market, zombifying any primate who takes a bite, including Wally. Gus must travel to the bananas' source planet and find a cure for the zombie germ.

When Gus blames YAY-OK for his own mistake during a training exercise, Dr. Chimpsky sends them YAY-OK7, an updated replacement who is quick to assert his superiority over the original model.

The Monkeys are on lockdown until they clean their ship. Desperate to make it to All-You-Can-Eat-Monkey-Mondays at the GASI Café, they take a few shortcuts—and end up waking a hideous garbage monster.

When the trash-talking Space Gorillas hijack Gus's mission, the 'Rilla-Monkey rivalry returns with a vengeance. To redeem themselves, the Rocket Monkeys take on their most dangerous mission yet.

Gus and Wally cannot help themselves when it comes to anything round and bouncy—which makes it awkward when Chimpsky entrusts them with the highly explosive BALL (Ballistic and Lethally Loaded).

Gus takes a game of Trash Torpedo too far, shooting Wally's beloved ukulele into space. To get it back, the Monkeys must face Pinky-Winky, a mean-girl space creature with musical plans of her own.

Gus and Wally only need one more badge before they receive the prestigious GASI Red Tassel of Achievement, so when the opportunity arises to save a stranded princess, the boys jump at the chance.

Gus and Wally are charged with herding 2000 Zortoids through space for their annual feeding at Gluttonia, but Wally must face a test of his monkey ethics when he befriends one of the herd.

Gus and Wally win the "Have-Deep-Space-Dave-Stay-at-your-Place" contest, but Deep Space Dave proves to be an annoyance as the Monkeys tend to his every need.

A dangerous comet threatens to demolish Gus and Wally's beloved Banana Snack Shack.

Gus rescues a cool monkey named Joel and they quickly become best friends, but this new pal has a suspicious interest in Inky's highly collectible splatter art.