Hexter Graves is a male fox and Jenni's cousin. He has beige and white fur and blue eyes. He normally wears a white tank top, black jeans, and white and black sneakers.

Hexter was born to Bernie Graves and his veteran wife Lisa. Hexter was the youngest son of Bernie Graves and is the same age as Jenni. While Hexter did live in the Graves family home, he wasn't present during the time of his uncle's murder. He was at his grandparents' house with his sisters. Upon hearing of his uncle's demise, Hex was more worried for Jenni and his aunt than for his uncle. 6 weeks later, Hexter and his sisters run away from home to free his cousin from the orphanage. Alongside his sisters, Hex finds Jenni living in a library safe and sound. He helps Jen through her depression and finds comfort in knowing he still has her. When he grows older, Hex leaves New York city to school himself on mechanics, later reuniting with Jenni and joining the Graves Gang.

Hexter is a highly skilled mechanic and has a mind for advanced mathematics and engineering. He is shy and somewhat of a coward. However, he is a caring and wily individual who only wants what's best for his sisters and cousin. Out of the entire Graves family, Hex and Jenni share the closest bond with each other and Hex's eldest brother Blake.

Trivia:

Hexter is the only male fox in the Graves family.

He is also the only member of the Graves family to not have any association with crime...until he joins the Graves Gang.