Robert Jeffrey "Bobby" Hill is the only son of Hank and Peggy Hill. Bobby Hill's age changes gradually throughout the series. Up until "Shins of the Father", he is 11, then 12, then 13 before being 21 years old in the revival.

Understanding the Context

[1] He is best friends and now roommates with his longest and closest... Robert Jeffrey "Bobby" Hill is a fictional character on the Fox / Hulu animated series King of the Hill and is voiced by Pamela Adlon. Bobby is the only child of Hank and Peggy Hill. There’s just one major problem with the way King of the Hill has been updated for 2025: Bobby.

Key Insights

The standout character in a series nominally centered on his dad, the Hills’ boy has now grown... King of the Hill's Bobby Was Never Meant to Grow Up - TIME Pamela Adlon (/ ˈædlɒn / AD-lon; née Segall; born ) is an American actress, writer, and director. She is known for voicing Bobby Hill in the animated comedy series King of the Hill (1997–2010, 2025–present), [6] for which she won a Primetime Emmy Award. Robert Jeffrey "Bobby" Hill (born ) is one of the two deuteragonists (alongside Peggy Hill) of the King of the Hill franchise. He is the son of Hank and Peggy Hill.

Final Thoughts

Pamela Adlon comes from an acting family and began her career in television in 1983. She has appeared in many popular TV shows, including as a voice actress in a number of animated TV series including, most famously, King of the Hill (1997) for which she won an Emmy for her role as Bobby Hill.