Marvin is a character in Banana Fish and a subordinate of Dino Golzine's. He is attracted to Ash Lynx and receives permission from Dino to join forces with Arthur to capture, interrogate, and torture the gang leader into handing over the Banana Fish drug.
Marvin is an overweight man with brown hair. He wears sunglasses and a brown suit and is often seen smoking.
He is both vindictive and short-tempered but a loyal follower of Papa Dino's, demanding others respect the mafioso and, in turn, respect his position as Golzine's bodyguard and right-hand man. It is widely known that Marvin is gay and has a preference for green-eyed blonds.
In the past, when Ash was a young boy being trained by Golzine, Marvin had been allowed to sexually abuse him repeatedly. The thug has kept pornographic videos of his abuse of Ash as trophies.
Marvin is watchful of Ash when the gang leader visits Golzine's manor, being both physically attracted to the boy and demanding that he respect the powerful mafioso. He annoyed by Ash's dismissive treatment of him and later jumps at the chance to team up with Frederick Arthur and get close enough to Ash to abuse him again. After Arthur's followers abduct Skip, Eiji Okumura, and Ash, Arthur beats Ash to try and learn the location of the missing Banana Fish drug. Ash seduces Marvin into releasing him from his ropes and beats the man badly enough that he, Skip, and Eiji can run, ultimately allowing Eiji to escape the hideout and alert the police to their location. During the police shootout, Marvin shoots Skip in front of Ash and flees in fear of an enraged Ash. He runs into an apartment building where Willard Evanstine's subordinates shoot him and arrest Ash for his murder moments later.
Marvin is a bodyguard and loyal subordinate to Golzine. He was permitted to sexually assault Ash when the latter was a young boy being raised by the mafioso.
While Marvin looks down on and distrusts Arthur, the two team up in their common dislike of Ash, Marvin seeking the chance to abuse Ash again. After successfully capturing Ash, Marvin, as a member of Golzine's mafia family, asserts his superiority over the street thug.
Marvin was attracted to Ash and sexually abused him when the latter was an adolescent. In response to Ash's verbal jabs he generally views him with disdain. He takes pleasure in beating Ash with his belt and is easily seduced by the street thug.
Main Article: Marvin Crosby Image Gallery