by Wyatt Cenac. Duke is a classmate of Fanboy and Chum Chum's. Voiced by Jeff Bennett. Nancy Pancy is a girl in Mr. Mufflin's class. Voiced by Kari Wahlgren; in "Fanboy A'hoy!" and "Slime Day", she was voiced by Nika Futterman. Francine is a brown-haired diva in Mr. Mufflin's class. Voiced by Candi Milo. Cher "Cheer" Leader is a cheerleader in Mr. Mufflin's class. She is a triplet and sometimes appears with her 2 other cheerleader sisters, who look exactly like her. The triplets were voiced by Kari Wahlgren in "Fanboy Stinks", but Cher is voiced by Candi Milo in all other appearances. Dr. Acula is a vampire plastic surgeon who gives Chum Chum a neck so vampire Fanboy can bite Chum Chum and turn him into a vampire too, in the end he was destroyed by sunlight. The same character model also appears as a vampire dentist named Dr. Plaque-ula in "Dental Illness". Voiced by Jeff Bennett. Miss Olive is a preschool teacher who appears in "Marsha, Marsha, Marsha," "Battle of the Stands," and "Frosty Mart Dream Vacation." The same character model also appears as a French teacher named Madame LaVache in "Excuse Me" with a French accent. Voiced by Candi Milo. Marsha was a sweet, successful student until Fanboy accidentally ruined her life by sneezing on her placement test, rendering it illegible. As a result, she received a failing grade and had to repeat kindergarten, where she swore revenge on Fanboy. She appeared in "Marsha, Marsha, Marsha" and "Face-Eating Aliens From Planet X". Voiced by Candi Milo. Cheech is a classmate in Mr. Mufflin's classroom. In "The Janitor Strikes Back" he was voiced by Nika Futterman. Fanbot is a robotic version of Fanboy that appears in "I, Fanbot". Mecha-Tech is a dancing, robot action figure. Mecha-Tech often says "I await your command!" and can do anything its owner tells it to do. Voiced by Dee Bradley Baker. Monster in the Mist is a figment of Boog's imagination. Voiced by Jeff Bennett. Scampers is one of Yo's Yamaguchi digital pets. Scampers is a cat. Voiced by Dee Bradley Baker. Yum Yum is a cycloptic bubble gum creature created by Fanboy and Chum Chum in "The Janitor Strikes Back". Voiced by John DiMaggio. Fanman is a superhero who appeared in the Random! Cartoons 8-minute short "Fanboy". He was voiced by Scott Grimes. Sprinkles is the class bear. Voiced by Dee