House Boy is actually Milhouse in disguise as when Bart pretends to be Bartman he needs an assistant which he chooses Milhouse and House Boy is his nickname.
History
House Boy appears in the 1st magazine of Best of Bart Simpson in the comic strip Utility Belt where you can clearly make him out as Milhouse.
Appearances
- Comic book – The Bart Allegiance
- Comic book – The Crimespree on Springfield 2!
- Comic book – Jingle Bells, Bartman Smells
- Comic book – Dial "M" for Milhouse!