In his robot suit, Brain poses as "Patti Ann". The illusion is so convincing (not) that Elmyra's crush, Rudy, falls head over heels for him.
Brain has a plan to clone dinosaurs but he needs funding to make it happen. Fortunately there is a cash prize for the spelling bee, and with Elmyra entered all he has to do is cheat to ensure she has even a slim hope of winning.
Using an intergalactic radio Brain manages to flag down a passing alien, in hopes of trading for advanced weapons. Unfortunately the alien is driven away by an annoying Elmyra.
Brain builds the perfect science fair project for Elmyra, in hopes that she wins and brings home the prize money.
When Elmyra enters a contest to be the first kid aboard the space shuttle, Brain coaches her in an attempt to win the contest.
Brain creates a formula that makes Elmyra's cat think that he is a dog.
Brain tries to make Elmyra popular, allowing him to work through her and take over the world.
Brain tells Elmyra a bedtime story that closely follows the plot of Cinderella.
Brain decides that he should organize the neighborhood kids into a gang, and when they grow up they will still see him as their leader.
Wally Faust tries to steal Brain's latest invention and kill Brain once and for all.
Christmas episode. After Brain gets angry at Pinky and wishes that Pinky was never his friend, he has a dream that shows him what things would really be like without his life long pal.
Elmyra draws a cartoon that has Brain building a giant robot that wreaks havoc on France.
Elmyra wants to go to the school dance with Rudy, but Rudy actually wants to go with Patty Ann, which is actually Brain in disguise. This suits Brain, because he needs to rescue his cologne that makes people instantly attractive.
When Pinky dreams of living a normal family life Elmyra dresses up both he and Brain and places them in a doll house.
Brain reads an altered version of the Edgar Allen Poe poem The Raven.
When Rudy steals Brain's latest invention, Brain must get past a pet snake to retrieve it.
Elmyra runs for class president, though nobody expects her to win, but then no one knows that she has a secret advisor in The Brain...
When Elmyra takes a trip to Disneyland, The Brain plots to replace the theme song in the "It's A Small World" ride with his own hypnotic message.
A teleportation device goes awry, fusing The Brain and Elmyra into a two-headed being.
The mice must prevent discovery by The Circle when veterinarian wants to publicize Elmyra's bizarre cat/dog.
Pinky and the Brain get their own children's entertainment program.
Brain builds a black hole in Elmyra's bedroom.
Pinky, Elmyra and The Brain go to a Meat Festival. The Brain develops a plan to take over the world using "Meats of Evil".
Vanity throws a party and Elmyra crashes it, with the help of Pinky and The Brain.
The Brain becomes "Braino", a masked crime fighter, and an allusion to Zorro.
