Whilst being occupied with something else, Mr. Peanutbutter will get distracted in some way by Erica, abruptly exclaiming: "Erica!", which is one of the series' longest-running recurring gags, premiering in the first episode.
Little is known about Erica, only small snippets of her life can be gathered from the few statements when someone is talking to or about her.
Various comments from Mr. Peanutbutter and BoJack seem to indicate that she is seriously disfigured.
Erica is a felon and likely a pedophile or murderer, given Mr. Peanutbutter's comments that Erica can't be at Disneyland because it's filled with children and that Erica can't vote in national elections. It is also implied that she killed someone, as she was seen with a child-sized coffin.
|Episode Number||Situation||Mr. Peanutbutter's exclamation||Notes|
|S01E01||While BoJack and Princess Carolyn break up at the restaurant, Mr. Peanutbutter joins them at their table awkwardly.||"Erica! Get outta here with that face!"|
|S01E01||At the quinceanera at BoJack's house, BoJack and Mr. Peanutbutter are making (reluctant) small talk.||"Erica! How are you looking so beautiful? I'm furious!"|
|S01E04||While Wayne is interviewing Mr. Peanutbutter for his Buzzfeed article, Mr. Peanutbutter gets a call from Erica.||"Erica! I don't have time to be charmed to death right now!"||It was presumably Erica who told Mr. Peanutbutter over the phone that it was "Burritos-as-big-as-your-head-day" at El Taco Loco.|
|S01E06||Directly after Mr. Peanutbutter proposed to Diane privately, he reveals to her that he had a surprise engagement party planned.||"Erica! Did you hear she said yes? Come in here! Alright.."|
|S01E09||Mr. Peanutbutter is recalling a story of how Erica gained a friend at his rehearsal dinner.||"Long story short, Erica did have to lose the foot. But she gained.. a friend. Sorry, kinda went off on a tangent there."|
|S01E12||At the afterparty of the Golden Globes, Mr. Peanutbutter and BoJack are conversing.||"Erica! Is that you? Who let you out of the burn ward? Get over here, you!"||This line was improvised by Paul F. Tompkins according to the Reddit AMA from show creator Raphael Bob-Waksberg.|
|S02E02||Mr. Peanutbutter talks to Todd about being involved in his newly founded Disneyland.||"Erica! You can't be here! This place is filled with children!"|
|S02E07||In the 1994 flashback, a bitter Katrina Peanutbutter leaves an indifferent BoJack and an embarrassed Mr. Peanutbutter to join Erica for drinks.||Katrina: "Erica! Throw me a raft! I'm dying."||This is the first time somebody other than Mr. Peanutbutter acknowledges Erica.|
|S02E12||Mr. Peanutbutter is socializing at a party while Diane is brainstorming new app ideas.||"Erica! Where did that tooth come from?!"|
|S03E02||In 2007, Mr. Peanutbutter is hosting a fundraiser for the John Edwards campaign for President.||"Wha..? Erica! You know you're not allowed to vote in national elections!"|
|S03E10||Mr. Peanutbutter pulls BoJack out of his pool, who thanks him and tells him Erica was looking for him.||BoJack: Hey, did you see Erica earlier? She was looking for you earlier, with her good eye. Her other eye was looking at the stars!||This is the second time somebody other than Mr. Peanutbutter acknowledges Erica. It is probably inferred that Erica has strabismus.|
|S04E07||Mr. Peanutbutter apologizes to BoJack for not admitting him to his fundraiser party for his campaign for Governor.||"Erica! Look at you with the right number of ears!"|
|S05E02||At his housewarming party, Mr. Peanutbutter is awkwardly talking to Diane after their split.||"Erica! What are you doing here with a child-sized coffin?"|
|S05E08||Mr. Peanutbutter is promising Katrina that he won't leave her alone at BoJack's 1993 Halloween party.||Mr. Peanutbutter: But I will not leave your side agai--- Oh, my god, is that Erica?!|
Katrina: No, no, no, please don't go talk to Erica.
Mr. Peanutbutter: Katrina, Erica doesn't know anybody else at this party. It would be rude to leave her all by herself.
Katrina: Well, can I at least come with you?
Mr. Peanutbutter: You know Erica can't talk to two people at once on account of her split-brain procedure.
Mr. Peanutbutter: Erica! Love the costume! Where did you find such a hideous---? Oh, my mistake. I'm so sorry.
|This is the first time more than one character acknowledges Erica in the same scene.|