In his dress and mannerisms, Marvy bears a strong resemblance to Major T.J. "King" Kong, the character played by Slim Pickens in the 1964 film Dr. Strangelove.
Pickens, a veteran of Westerns, was hired after Peter Sellers, who played three other roles in the film, injured himself. Pickens was not told that the film was a comedy, and was urged to play his role seriously. The character's over the top, deranged nature is basically Pickens' ordinary style.
The character is most famous for his final moment, riding the nuclear bomb whilst whooping and waving his cowboy hat.