Gohan’s girlfriend is Videl.
Videl is the daughter of Hercule, the Martial Arts Champion of the World. Videl attends Orange Star High School with Gohan. Videl and Gohan later get married and have a daughter named Pan.
Videl is a supporting character of the Dragon Ball series created by Akira Toriyama. The series’ first began serialization in Shueisha's Weekly Shonen Jump magazine in December 3, 1984. She would later appear during the Great Saiyaman Saga. Her first appearance was in Dragon Ball Volume 36 Ch. 421 "Herculopolis High".
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Dragon Ball Z is the landmark anime series sandwiched between Dragon Ball and Dragon Ball GT. The series was a major player in popularizing the genre in America, and it has reached cult status among some devout fans. Here is a ranking of the Dragon Ball Z characters, from inconsequential to absolutely essential shared by Complex.com.