Bart Simpson's biological father in the main canon of The Simpsons is Homer Simpson. He is consistently portrayed as Bart's father throughout the animated television series and most related media.
However, in a unique, non-canon instance from a Treehouse of Horror comic, an alternate origin for Bart's paternity is presented. In the comic titled "Bart Simmons God of Thunder!", Gene Simmons of the legendary rock band KISS is humorously revealed to be Bart's "real" father. This particular storyline reimagines Bart as a formidable, KISS-like god of thunder, highlighting the creative and often outlandish nature of the non-canonical Treehouse of Horror specials and comics.
The dual nature of Bart's paternity can be summarized as follows:
| Context | Biological Father | Description |
|---|---|---|
| Main Series Canon | Homer Simpson | The established and consistent father figure throughout The Simpsons television series and its primary narrative. |
| Comic Spinoff | Gene Simmons | Revealed as Bart's father in the non-canonical Treehouse of Horror comic "Bart Simmons God of Thunder!", where Bart gains thunderous, god-like powers. |
This distinction underscores the difference between the well-known, overarching narrative of The Simpsons and the various creative liberties taken in special, non-canonical spin-off materials.
