Be More

Synopsis
Finn and Jake disguise themselves as MOs to infiltrate the MO factory and save BMO from malfunctioning.

Plot
BMO hides underneath a cardboard box in the Tree Fort. BMO brings up a file manager interface on its screen, and drags and drops files into a trash can, causing it to giggle and hallucinate squiggles and stars. BMO repeats this process, but accidentally selects and deletes coresystemdrivers.sys. Deleting this crucial program causes BMO to collapse.

Finn and Jake prop BMO up on some cushions. BMO, stuttering, explains that it needs to install new core system drivers, which they can find at the MO factory in the Bad Lands, where BMO was born. BMO leads Finn and Jake there, but warns them that damaged MOs get full memory wipes before they are repaired, and it makes Finn and Jake promise not to let this happen to it. BMO then explains that only MOs are allowed in the factory. Jake shape-shifts into a MO, and Finn pretends to be a MO by stuffing his head and arms into his shirt, using BMO as his head.

Finn and Jake request new core system drivers from the robotic MO factory receptionist, who then threatens them with a full personality wipe. Finn backtracks, claiming that they had only visited the factory for nostalgic purposes. The receptionist then leads them on a complementary factory tour on a tram. On the tour, Finn, Jake and BMO spy the driver ports through which BMO can download its core system drivers. They jump off the tram, only to find that the B port (the only port compatible with BMO) isn't there. The factory's security guards appear and shoot their vaporization guns at the three, who dodge out of the way just in time. Mistakenly believing that they have successfully vaporized the intruders, the guards leave.

The guards return to a staff lounge for small talk. Jake shape-shifts into one of them, carrying Finn and BMO on his shoulders. BMO explains that if it can connect to one of the guards' ports, it can hack into its computer and find where the B port is. Jake plugs BMO into one of the guards, recovering a map to the B port, and then the three leap out of Jake's disguise. They re-board the tram, with the security guards in hot pursuit. They follow the map to the B port, falling off the tram and crashing through several floors before landing.

The security guards fall soon after, brandishing their vaporization guns at the three, before BMO explains, “I am not non-MO. I am BMO.” The guards gasp, and a voice asks, “BMO?” Finn, Jake and BMO look up to see a emaciated, atrophied old man, kept alive only by MOs. The man explains that he is Moe, the creator of the factory, as well as the creator of BMO. Moe assures Finn and Jake that he will not reset BMO's personality. Moe explains that he originally built BMO to take care of his son, but since he never had a son, he sent BMO off into the world alone, hoping that it could find a family of its own, maybe even find somebody else's little boy to take care of. Although he claims to have built a million robots, Moe says that BMO is very special: he built BMO to understand fun and how to play. He built BMO to be more - this is BMO's namesake. CMO hands Moe a back-up drive disk, which heals BMO. BMO awakens and runs up to hug Moe. Jake points out that although Moe claimed to have made millions of robots, he and Finn had only seen the receptionist and the security guards. Moe then leads them to a hatch, which opens to reveal a populous and diverse ecosystem of robots. Moe tells BMO to say hi to its family, and BMO immediately does. The other MOs say hi back to BMO, and BMO slaps its screen in happiness. The episode ends here.

Major Characters

 * Finn
 * Jake
 * BMO
 * DMO
 * SMO (multiple)
 * Moe

Minor Characters

 * Snail
 * MOs
 * CMO
 * EMO
 * FMO
 * LMO
 * MMO
 * PMO
 * QMO
 * WMO
 * ♥MO
 * SMO

Trivia

 * In the Treehouse, a nuclear bomb can be seen on the shelf.
 * It is revealed that out of all the MO bots, BMO is "one-of-a-kind". BMO means "Be More" which is the title of the episode.
 * It is also revealed that BMO's programs are in the ".exe" format, the file format for Windows programs, but also in ".dmg" format, the file format for Mac programs; meaning he is a multi-platform system.
 * Furthermore, the various MOs can read .MO files, as seen when BMO is downloading the map of the facility.
 * When Finn and Jake fall through the factory floors, they pass a purple bed emblazoned "AMO" on the front. They also fall past the BMO port.
 * There is a large indent in the metal door the the room of the BMO port.
 * When Finn jumps into the room with the MO ports, the port for AMO is somewhat visible, it appears to have the same shape as BMO, but is larger, and seems to have two sideways horns perturbing from both sides.
 * BMO can be turned on and off by pressing the up on the D-pad and the triangle button.
 * When Finn, Jake and BMO fall to the final level, CMO makes another cameo appearance, falling on the SMO's heads.
 * The first place the group crashes through, before the B port, looks an awful lot like a fallout shelter; complete with dust, cobwebs, and mysterious chemicals in spray bottles.
 * BMO has a literal heart of gold.
 * The MO at the end name of every MO robot's name likely stands for more. For example: AMO could stand for Ammuniton more, which flipped backwards is more ammunition. This makes sense since AMO is described as "death star sized".
 * A MO named LMO is holding a one dollar bill that has a face of a skull which appears to have broken horns attached to it.

Cultural references

 * BMO's interface is similar to an Apple computer's.
 * One of the files BMO has is command.electricslide.exe, a reference to the popular dance the Electric Slide.
 * Another of BMO's files is controls.brownnote.sys, a reference to the hypothetical tone that would cause humans to move their bowels.
 * When Moe re-powered up BMO after fixing him, the old Apple start-up chime plays.
 * This also happened when BMO had his batteries re-inserted in "BMO Lost".
 * The stone slabs in the title card strongly resemble Stonehenge.
 * When Moe opens BMO's case, among its innards are a diploma, a heart, and a medal. These are also the gifts given to the Scarecrow, Tin Man, and Lion in the 1939 film "The Wizard of Oz".
 * The first room Finn, Jake, and BMO fall into after the tram chase appears to be an old cleaning supplies room, which has a caution sign that reads アブナイ, which means 'dangerous' in Japanese.
 * While SMOs are going after Finn, Jake and BMO, They go through a Corkscrew, which is one of the famous Roller coaster elements.

Errors

 * When Moe puts back BMO's motherboard, the screws disappear.

Production notes

 * Pendleton Ward sent Aziz Ansari a last-minute tweet asking him to be in this episode.
 * Rebecca Sugar helped write the episode when it was originally pitched during season 3.

Storyline analysis

 * This is the first episode in which Finn definitively finds someone who is at least close to human, Moe (who is kept alive only by robots). Moe is one of the survivors of the Mushroom War proven by the age of his factory.