Not much is known about him before "Teachers' Union". Near the end, he comes to Lincoln's 5th grade classroom to clean up before catching his eyes on Mrs. Johnson.
In "Absent Minded", he appears as the boys are trying to clean the bathroom in order to stay quiet about Clyde's attendance. It was also revealed that back in April 2012 that a toilet exploded and flooded the school causing the school to be closed and Norm to take a leave of absence.
He is a tall and slim man. He has light brunette hair, thick black eyebrows, and heavy bags under his eyes. He wears a navy blue janitor uniform, with rolled up sleeves, a blue cap, black belt, and white shoes.