She-Hulk is related to Marvel's more notable green giant, but she's far more than just a "girl version" of the Hulk. Witty, pretty and powerful, Jennifer Walter's gamma-powered green form gives a whole new meaning to the term "Hulk out." The result is that she's almost the polar opposite of her cousin, Bruce Banner.
Source:https://www.cbr.com/she-hulk-bruce-banner-differences-marvel-comics/