Buck is a minor character appearing exclusively in the live-action adaptation of Cowboy Bebop. He is known primarily as the partner of Peggy Landsford, and the couple is encountered together during a single scene set in Ana's bar. Physically, Buck has gray hair and dark-colored eyes. His attire consists of a dark gray fedora, a gray diamond-patterned vest worn over a light brown plaid dress shirt, a tie, a necklace, black pants, and shoes.

Very little is revealed about his personality, though he appears to share his partner Peggy's astute and well-informed nature when the topic turns to their musical interests. The only glimpse into his character occurs when the couple visits the bar. After leaving their weapons at the front desk, they are escorted inside by Gren. As they are led to their reserved table, Peggy inquires about a performer named Rita Liontene. When Gren responds coyly that she is not scheduled to perform, Buck chimes in with a piece of knowledge, noting that Rita loves to play at night. This observation aligns with the couple's evident dedication to following musicians and securing the best seats in the house.

In terms of his role in the story, Buck has no broader impact on the main plot or the crew of the Bebop. He serves as a background character who helps establish the atmosphere of the bar and the world of the adaptation. Information regarding his background before this scene, his personal motivations, any significant relationships beyond his partnership with Peggy, any form of character development, or any notable abilities or skills is not available.