Sue Bob Murphy is the fourth worst kid in school.
Sue Bob first appeared in "The Girl Was Trouble", an episode entirely in black and white. She is first seen in the principal's office, greeting Gretchen as she comes in. She then goads Gretchen into telling her why she was sent to the principal's office. Gretchen does, telling her that she was framed for crimes committed by three of Sue Bob's cronies Greg Skeens, Conrad Mundy, and Kristen "Kurst the Worst", during her search for her Galileo handheld device. After Sue Bob hears the story, she asks why Gretchen took the fall for the crimes. Gretchen replies by saying that she didn't rat them out or stop them, she was as guilty of the crimes as they were. Sue Bob gains respect for her after this, and gives her back her Galileo, saying that she traded it for some food off Kurst the Worst. Gretchen gives her thanks, and Sue Bob is last seen watching her go into the principal's office.
Sue Bob also appeared in the episode "Don't Ask Me" where Spinelli took Guru Kid's job for a day but was giving people bad advice that were causing both problems and trouble for the kids of the playground. She told them to do violent, bad and rude things. Sue Bob was first mentioned by Cornchip Girl telling Spinelli that Sue Bob Murphy took Cornchip Girl's lunch off her, ate it in front of her and made fun of her in her face. Spinelli then told Cornchip Girl to beat her up and show her how to fight. Sue Bob then appeared and was crying in tears because of what Spinelli told Cornchip Girl to do to her. Spinelli then told Sue Bob to pick on Cornchip Girl again then Cornchip Girl showed up and was mad at Spinelli for telling Sue Bob. Cornchip Girl said 'Now I want a piece of you'.
Sue Bob then made a cameo as a dodgeball player in "Dodgeball City", along with her two other friends and cronies Greg Skeens and Conrad Mundy indicating that she and they may all be in fifth grade. She also appeared alongside Skeens and Mundy in the episode 'The Ratings Game' where the three of them were put in the same group with and had the same ratings number as Digger Dave and Cornchip Girl. She then made another cameo again along with Skeens and Mundy in the Episode 'League of Randalls' where Randall recruited the Ashleys' Little Brothers the Tylers and turned them into Snitches and Spies as well. Sue Bob, Mundy and Skeens were in the list of students known as 'Neardowells and Miscrients' that had been reported and snitched on several times. They were seen standing inside the Naughty Box where all the other kids that did something bad or naughty were standing.
Sue Bob's last major appearance, was in "Kurst the Not so Bad" where she is seen developing a resentment of Mikey after Kurst is seen hanging out with him and rejecting her friends after they ridiculed him. So Sue Bob and her cronies steal a huckleberry cobbler from the school cafeteria so that Kurst can go back to hanging out with them. Sue Bob tells Kurst that she made it, herself, and that it was for her. This inadvertantly lead Kurst and Mikey (whom with Kurst shared the cobbler in kindness) to be framed for their crime, until Sue Bob and her cronies are caught, and the last of her seen in this episode is her being dragged away by the lunch ladies with the rest of her cronies.
Sue Bob also made numerous cameos in two of the movies as well: Recess: School's Out and Recess: Taking the Fifth Grade. She doesn't have a speaking role in the latter, due to Christine Cavanagh retiring from voice acting.
Sue Bob has a narrow face with a light placement of freckles. In "Kurst the Not so Bad", she is revealed to have brown hair, blue jeans, gray sneakers, and a purple jersey with orange sleeves with a large orange number zero on it's front.
Her personality is less defined because she has minimal appearences compared to the other bad kids. She seems to be the most calm and collected of the bad kids. While she doesn't seem to mind stealing, or other stuff that makes her a frequent visitor to the principal's office, she seems to listen to people's stories a lot (or at least just Gretchen's) and she also seems to have a little respect for Gretchen and a bit of resentment for Mikey. Her relationship with the other kids remains to be seen.
- In "Don't Ask Me", she's played by Kath Soucie instead of Christine Cavanaugh.