Erica is one of George and Harold's best friends, who often acts as a big sister figure to them and is the voice of caution when participating their bizarre schemes. Her goal in life is to become a very successful senator.
In "Captain Underpants and the Vexing Villainy of the Vile Vimpire", she suggests that George and Harold should try adding a strong girl character to their comics because the girl characters they’re already using are too flat and stereotypical. The boys think she's just trying to ruin their fun and make a mean comic about her. To get back at them, she pretends to be a vampire (a vampire that sucks out everyone's happiness, instead of blood). When Melvin's invention turns Jessica into a vampire, George and Harold get down on their knees, apologize to Erica and beg her to help, to which she agrees.
In "Captain Underpants and the Strange Strife of the Smelly Socktopus", she decides to prank George and Harold into getting themselves suspended on purpose when she tells them it's like a vacation. The boys eventually prove they have what it takes, only to realize that Erica tricked them and suspension is terrible.
In the "Captain Underpants and the Confounding Concoction of the Crooked Combotato" She suddenly appears and attempts to join the game of plot potato. When questioned as to how she was aware of the game she simply says "I know everything". She tries to end the story by saying that she put Captain Underpants and Combotato in prison. The group finds this ending unsatisfying and so she leaves frustrated. Later as the real combotato is chasing them through the ropes course she swings by and tries to shout out her idea for a different ending to the story where Captain Underpants realizes he had just imagined Combotato. This ending is also rejected. Later as Bo is about to finish the story for real and she interrupts him by revealing she saved Mr. Krupp from the rain and that now they can do fun things again and asks if they find this an acceptable ending. Everyone once again simply replies "meh" much to Erica's frustration.
Erica is African-American, and is about 12 years old. She wears a teal green T-shirt under an aquamarine vest and has a large pom pom hairstyle joined by a purple headband. She also wears jeans and rain boots.
In the 11th and 13th episodes of the TV series and some episodes in the camp arc, during the a few scenes featuring her, she wore a yellow bikini with a bandeau top.
As Plungerina, she wears a purple superhero costume, has plungers for makeshift claws and plunger stilts.
Erica is somewhat more sensible and mature than most students, but does not hesitant to have fun. She has slightly higher intellect than other kids, but unlike Melvin Sneedly, who had a crush on her, Erica's intellect is low enough so that she doesn't share his arrogance. She also knows the difference between what is funny and not so humorous, and surprisingly knows everything about George and Harold's shenanigans and even pranked them twice before. Her best friends are Harold, George and Dressy.
- In the last episode of season 2, it is revealed she gets elected as President of Earth in the future.
- Erica shares the same first name as her voice actor.
- Erica was created in order to rectify the franchise's lack of strong female characters. This is the main focus of Captain Underpants and the Vexing Villainy of the Vile Vimpire.
- Erica's future self passed herself as the second superintendent (after Vil Endenemys, aka Melvinborg, Melvin Sneedly's future self) of Jerome Horwitz Elementary, Grace Wain in season two.
- Erica is mixed, because her father is Asian and her mother is black.
- Erica did two comic books: One being a guest star in the Plungerina comic, and the other replacing George Beard doing the same storytelling with Harold about Baloonatic.