Bun Control/Ex Mousina/Bloopf is the fourth episode of the Animaniacs reboot.
The Warners fight a rabbit infestation caused by a deranged farmer. Brain’s robot "son" turns on him. A new app is born. 
Dot: Never mansplain-ey.
Animation by Titmouse, Inc.
Anime parody segment animated by Studio Yotta
A farmer named Dwayne Lapistol arrives at the Water Tower who moved in next door, is selling bunnies. Dwayne goes to the water tower and tries to show Yakko his buns, but Yakko thinks he is talking about his butt and says "Good night, everybody" and closes the door. Dwayne Lapistol tells Yakko he is not talking about those buns and shows him the buns he was talking about. Wakko and Dot love the bunnies and buy two. The next morning, the bunnies have multiplied. The Warners' tower has been infested, including the whole studio. Yakko tries to return the bunnies to Dwayne, but he refuses saying that people with lots of bunnies are better people. Instead, they go to the CEO Nora Rita Norita to report the problem. Nora says she wants the bunnies kept in the studio, Suddenly. the water tower explodes, filled with bunnies. The Warners get very angry and the show changes into anime battle. Dwayne battles the Warners, and wins with the help of gigantic bunnies. The show changes back to a normal form, and Wakko decides to call the dingos for help. The dingos take all the bunnies and sell them to people while Dwayne is bagged and put in a truck.
- Written by Jess Lacher and Andrew Barbot
- Directed by Scott O'Brien and Adriel Garcia
- Dwayne LaPistol is a thinly-veiled parody of Wayne LaPierre, a gun rights activist and the executive vice president of the National Rifle Association.
- The dingo's scheme to initiate a "bun buyback" is a direct reference to Australia's gun buyback scheme that took place in 1996 as part of strict gun control laws passed in response to a mass shooting in Tasmania.
- The water tower bursting with bunnies might be a reference to episode 12 of the original series, in which the Warners slide down a mountain of Popcorn using skis.
- In the anime battle with Dwayne, the Warners parody various anime series:
- Yakko parodies Dragon Ball.
- Dot parodies Sailor Moon and Kill La Kill.
- Wakko parodies a type of character design usually depicted in shows made by Studio Gainax and Studio Trigger, such as Kill la Kill, Gurren Lagann, Little Witch Academia, Panty & Stocking with Garterbelt, etc.
- Their tails are also shaped like Pikachu's from Pokémon.
- Thaddeus Plotz appears in the episode in a portrait in Nora’s office.
- Rita and Runt were originally meant to appear in a poster parodying the "Hang in there, Baby!" motivational poster. Runt appears to be traced from a screenshot from "'Twas the Day Before Christmas." 
- Bugs Bunny was also going to make a cameo, but he got cut from the episode as they thought that it wouldn't work.
- This is also the first time that when Yakko started singing a song, he gets cut off short by something or someone else. This happened again in Manny Manspreader.
- The Animal Fair, Old MacDonald and America the Beautiful are the songs playing in the background of this cartoon. In addition, the Australian folk song Waltzing Matilda plays when the dingoes are parachuting from the sky.
Animation by Snipple Animation Studios
Brain is working on a new invention to take over the world and Pinky is very curious to see what it is. Brain presents it as the Binary Rodent Artificially Intelligent Nanotechnology, or B.R.A.I.N. for short. Brain decides to have B.R.A.I.N. as his son, so he can help with his evil plans to take over the world. After Brain sings a song about bonding with B.R.A.I.N. (Bonding), he proposes his plan. B.R.A.I.N. says that it will not work, and it does not make sense. Brain tries other ideas, but B.R.A.I.N. suggests his own plan, which includes destroying both Pinky and Brain. B.R.A.I.N. grows into a cybernetic abomination and asks them for any last words. Pinky asks a stupid question which makes B.R.A.I.N.'s system explode because of an error. After he explodes, Pinky and Brain clean up the spare parts and Brain says that tomorrow night they will try to take over the world again.
- Written by Greg White, Lucas Crandles, and Timothy Nash
- Directed by Scott O'Brien
- This is the second time Brain has a “child”. The first time was back in the spin-off episode Brinky, where Pinky and Brain’s DNA gets mixed up into a clone named Romy.
- Pinky defeats B.R.A.I.N with a “logic bomb” in a similar matter to how Captain Kirk and would defeat computers and robots in Star Trek: The Original Series.
- Pinky's desire for a fatherly bond is alluded to here. This most likely stems from the tumultuous nature of his father's behavior, which is later mentioned in "Roadent Trip".
Animation by Titmouse
The Warners are hosting a convention for an app named Bloopf, which contains 1/10 of a second video. After showing the top 10, Bloopf is acquired by an app named Spooder, which has blinding lights and sounds that only dogs can hear.
- Written by Kathleen Chen and Brian Polk
- Directed by Erik Knutson
|Rob Paulsen||Yakko Warner, Pinky|
|Jess Harnell||Wakko Warner|
|Tress MacNeille||Dot Warner|
|Maurice LaMarche||The Brain, B.R.A.I.N.|
|Stephanie Escajeda||Nora Rita Norita|
|Danny Jacobs||Dwayne LaPistol|
|Nancy McKeon||Additional Vocals|