It first aired on January 1, 2018.
The Fanboy Factor
When a giant monster attacks the Unikingdom, the gang fights back with Dr. Fox’s awesome new secret weapon: a massive mega robot!
When a giant monster attacks the Unikingdom, the gang fights back with Dr. Fox's awesome new secret weapon: a massive mega robot! But after the threat is contained, Unikitty doesn't want to stop using the awesome robot, so she finds excuses for them to use it for everything, no matter how pointless. But what if the greatest threat to the kingdom turns out to be them? 
During a sunny day in the Unikingdom, an umbrella seller bemoans how unlucky he is at selling his merchandise. When it seems like it is starting to rain, he is glad that his luck is changing around, only to realize the rain is actually slime from a jelly monster, which sucks him up by stepping on him. As the siren alerts the citizens about the monster, while they all panic, with many getting sucked up by the monster, Unikitty notices the danger from the castle. Suddenly, Hawkodile bursts in, covered in slime, not able to fight the monster. Much to the confusion of the others, this delights Dr. Fox, who uses the opportunity to show off the Shining Mecha Kitty Turbo V, a robotic mech that resembles Unikitty. While the others gawk in awe of the robot, Richard asks who payed for it. As Dr. Fox explains the strengths of the robot, Unikitty is more focused on if the robot needs five pilots, which it does, much to her delight.
Beaming into the robot, the five are suited up, as they pick the body parts they'll control: Dr. Fox is the left arm, Hawkodile is the right arm, Puppycorn is the legs, and Unikitty is the head. This saddles Richard with the appendix, much to his annoyance. It takes a while for the team to get in sync with each other, causing the robot to stumble aimlessly around. Eventually, they find the right way, sending out a leap that lands them on the monster. Angered, the monster throws parts of his body at the robot, which Dr. Fox blasts with a light cannon. When the monster tried to punch back, Hawkodile threw up a shield from his side's arm, blocking it. Puppycorn used a kick attack, sending one of the feet of the robot all the way around the world to kick it from the opposite side. Once angered by this, Puppycorn kicked the monster in the air, where Unikitty summoned a light sword, cutting the monster in half. This split the monster into two smaller monsters, who quickly embrace, as the monster was just lonely.
As Unikitty expresses her love for the robot, Richard mentions they need to bring it back into storage. The others protest, praising the robot for what it is, and commenting that they need it for "reasons". Unikitty demonstrates by noticing Really Old Edith walking across the street. As the robot picks up the citizen, while she praises the thoughtfulness of them, the robot ends up throwing her across the street, embedding her into a building, much to her shock.
While Richard protests about the non-combat usage of the robot, the others are distracted by another citizen, who is struggling to get out of a parallel parking space. Despite the fact she insists that she is fine, the others launch a pair of missiles at the cars near her, blowing them up, as the citizen nervously drives away. As Richard continues to object, Unikitty is more focused on a "cry for help", which turns out to be a child's pet lizard, Sebastian, refusing to get down from a tree. Hawkodile and Puppycorn combine their parts' abilities to send out a laser beam that ravages the forest, earning the anger of both Sebastian and his owner.
As Richard continues to protest, Unikitty insists that they they need the robot "for reasons". They then proceed to spend the time using the mech to swim, uprooting trees and playing them like maracas, punching into the castle to get their food, and sleeping in the middle of the town. This ends up going on for months on end.
After the robot forcibly takes ice cream from a vendor, Richard continues to complain about the state of the mech, which has now grown unhygienic. Hawkodile's arms have atrophied from a lack of exercise, Dr. Fox has programmed herself with the computer of the robot, and Puppycorn has been awake for thirty-six days straight. As Richard complains yet again, Unikitty demands that they stay in it forever, then ends up breaking the lockdown button, jamming the doors.
As Unikitty creates a dance party with the robot that starts to ravage the town, sending out another monster alert by the sirens. While Unikitty declares that she will protect the citizens, she is confused by the fact that there is no monster in the town, as they are the only ones there, and all the citizens are running away from them. It takes the explanation of Craig, who had been trapped on the robot ever since the beginning of its adventure, that the robot is the monster now. While Unikitty tries to apologize, only creating more damage, Richard tries to get her to unlock the robot, where she realizes that the lock is broken.
Because of this, Unikitty realizes they will have to fight themselves to destroy the robot. Unfortunately, none of their attacks do a single thing, so they resort to the Mega Robot Giggle Missile, which they fly into. Despite the large explosion, this does nothing to the robot. It is then that Richard notices his console only contains one button: the self-destruct mechanism. Despite his annoyance, Unikitty forces him to push it, which destroys the robot in an eruption of fireworks, but launches the others out to safety. While upset that the robot is destroyed, they then decide to go out for ice cream, forgetting the situation.
Later, Richard directs his attention to the audience, as he and Dr. Fox give a public service announcement about the appendix.
For a full transcript of "Kaiju Kitty", click here.