Original air date: 6/28/2002 (produced in 2001)
Production code: PPG-410
Mojo Jojo has to team up with the Powerpuff Girls to save the day from an alien life force that predicts their every move.
Forced Kin provides examples of:
- Always Someone Better: The alien starts out as this towards Mojo, performing feats of villainy which coincidentally matches his own future plans. Mojo, in a fit of rage, soon turns the tables on him.
- Baguette Beatdown: How Mojo eventually beats the alien.
- Beam-O-War: The girls lose this at the beginning of the episode.
- Big Dam Plot + Going Critical: The alien combines these 2 tropes by first blowing up a dam, so that the ensuing Giant Wall of Watery Doom destroys a nearby power plant, resulting in a nuclear explosion.
- Big "NO!": Done by Bubbles when Blossom states they need help to defeat the alien.
- The Cameo: Dexter from Dexter's Laboratory has a brief cameo in the episode.
- Card-Carrying Villain: Mojo happily gloats to a store owner how evil he is.
- Chekhov's Gun: When first seen in this episode, Mojo Jojo is at a grocery store complaining about a stale French bread. At the end of the episode, when finally pushed too far by the alien, Mojo proceeds to use this stale French bread as a bludgeon to beat the alien. It's thick enough to knock the alien down to the ground.
- Doppelgänger Spin: The girls use this technique as a last ditch resort when first confronting the alien, even though they never tested it before. It fails.
- Elephants Are Scared of Mice: In order to both stop a mammoth raging through Townsville and destroy the alien’s device that is keeping Earth close to the sun, Mojo has the girls use a big piece of cheese to lure a horde of mice towards the mammoth. Seeing the mice, the mammoth quickly panics and flees, trampling over the device in the process. Quite fitting since mammoths are just a type of elephant.
- End of an Age: This was the final episode (as well as the final animated show) to use the 1986–2002 Hanna-Barbera "swirling star" logo.
- Enemy Mine: The Powerpuff Girls team up with Mojo Jojo against an even greater evil, namely the colossal Alien.
- Evil vs. Evil: Mojo Jojo vs the alien.
- Evil Versus Oblivion: Mojo refuses to help until the girls point out if the alien destroys the world, he'll die too.
- Eviler than Thou: Mojo beats up the alien leader and forces him to admit that he is the most evil. Ironically though, Mojo is praised as a hero for this by the entire town.
- Expy: The alien is an expy of Galactus while also resembling Superman's foe Darkseid.
- Furry Reminder: During his Villainous Breakdown and before going ape on the alien, Mojo starts acting like a normal chimpanzee and even makes screeching noises like one.
- Harmless Freezing: When the alien heats up the Earth by moving it closer to the sun, a Mammoth is freed from the ice he was frozen in and appears completely fine.
- Hey, That's My Line!: Mojo's reaction to hearing the alien declare himself the new leader of Earth.
- Kick the Dog: As part of his evil-lessons, Mojo destroys a cute bunny doll in front of the girls and then makes them do the same thing.
- Kneel Before Zod: What the Alien demands all humans do after he destroyed Townsville.
- Lesser of Two Evils: The girls team up with Mojo to take down a common enemy.
- Mind Manipulation: The Alien uses this to make a postal worker swap a birthday package for a boy named Timmy with one containing secret, governmental missile launching software. As such, Timmy accidently gets the software and, thinking it’s a video game, ends up launching a heat seeking missile.
- Misguided Missile: After the alien manages to get a heat seeking missile launched towards a volcano, the girls divert it to the aliens’ own ship by freezing the volcano and heating up the alien ship with their eye beams.
- New Powers as the Plot Demands: Since when did Mojo learn to fly?
- Poke the Poodle: Mojo declares that one of the standard measures of him being evil is that he refuses to pay for a baguette at a store.
- Prehistoric Monster: The woolly mammoth which goes on a rampage upon being thawed in modern times.
- Takes One to Kill One: The reason the girls ask Mojo for help is because, as one of the most evil beings on the planet, Mojo can hopefully help them learn to think like an evil mastermind and thus predict what the Alien will do next.
- Time Bomb: Blossoms’ bow is revealed to be one of these in disguise, though the girls are reluctant to use it. When they do however, the alien simply counters it with a similar bomb of his own.
- Villainous Breakdown:
- Mojo loses his shit when the alien bests him at one too many evil plans.
Mojo: YOU HAVE BROKEN MY DREAMS!!!- He has another one at the end of the episode, when the Narrator credits him for saving the day and calls him "the goodest good guy to ever live."
- Weather Manipulation: The Alien is capable of this, using it to send a tornado to Townsville.
- Wrestler in All of Us: Mojo manages to put the alien, who is many times larger than him, in a leg lock.
- Worthy Opponent: Mojo gains quite some respect for the alien when he sees him destroy both a dam and a power plant in one move. He quickly loses it again though.
