A.J. Slick is Steve's primary competition in the Pearl Bailey High School talent show in "The Talented Mr. Dingleberry".
During tryouts for the school talent show, Principal Lewis' frustration with poor acts cause a reduction in redundant acts and things are exacerbated when A.J. sabotages Steve's singing by slipping him Lemon Pledge to drink, Roger offers to help him put together a ventriloquism act instead and the tryouts go well. But when A.J. insults the pair, Roger appears with him in a darkened weight room. After he abuses the 'doll' further, Roger secures the door and drops a barbell on his throat, crushing his larynx.
In "The Hall Monitor and the Lunch Lady", while Steve and Klaus investigate the cause of several students becoming ill during lunch, they discover a large amount of sawdust being stored in the kitchen. Working with Hank Turlington who is also investigating, he manages to get Steve sent to the Chimdale Juvenile Detention Center where he manages to make friends with A.J.'s brother T.J. Slick by catching him in a 'trust fall.'
With a positive endorsement from T.J., A.J. accepts him in the hall monitors, where he learns that under the direction of Principal Lewis, they've been shaking down students. He also learns that Lewis, looking to expand the need for sawdust generated by his Christmas tree farm, has been poisoning the students and plans on doing the same to the entire town.
When they try to take their evidence to Turlington, they find he has been killed. The hall monitors are invited out to Lewis' Christmas tree farm for the poisoning, but he also reveals that he knows there's a mole. Having taken Turlington's phone, he dials up Steve. Facing capture, Steve uses the power of his leg muscles that he built up while in juvie to leap over the gang and drink the poison himself. Klaus makes a timely arrival with the former lunch ladies and they rout the gang. Steve is saved by a salsbury gravy IV as Klaus informs him that Lewis got away.
He is also in Oedipus Rox in "Tapped Out", in the auditorium in "Salute Your Sllort", And auditions for the show of the same name in "Langley Dollar Listings".