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Roadblock is not the only G.I. Joe strongman with an unusual passion. When Heavy Duty goes to battle, it is classical music that flows inside his head. Heavy Duty is a rough-and-ready individual with a big heart and soul. He very much craves action just as much as the next Joe. But few would have ever suspected he knows Bach and orchestral music. At a very young age, Heavy Duty developed a passion for classical music and even became an accomplished classical guitarist. Playing the musical instruments gave Heavy Duty the edge in operating heavy weapons systems that require some specialization in operating them with both hands.
A Real American Hero continuity
Marvel Comics continuity
Heavy Duty first appeared in issue #130 of the G.I. Joe comics published by Marvel Comics. He was among the group of Joes who defended the Pit from an assault by Cobra.
Devil's Due Comics continuity
He appeared in issues 11-12 in the comics published by Devil's Due, and later makes a cameo in issue #32 of America's Elite, wearing his Sigma 6 costume.
Hasbro Comics continuity
DiC animated series
He was also featured in the first and second season of the second animated series. Heavy Duty appears in several episodes in the DiC-produced third and fourth seasons of the original G.I. Joe TV series.
In the G.I. Joe: Spy Troops CGI animated film, Heavy Duty returns with a more colorful personality, albeit as one who loves explosives. It is mentioned in the film that he is Roadblock's cousin. Like his relative, he shares the same passion in cooking, if not the skills.
|A Real American Hero (1991)
Appearance: black hair and mustache; neon green cap; off-white sleeveless torn shirt with black strap; red tattoo on left arm; dark pants with neon green triangles; black belt and bootsAccessories: small, dark green tech backpack with clip for cannon support; large, green handheld support with detachable double-barreled cannon and two detachable spring-loaded missile launchers; red, L-shaped eyepiece attaching to backpack; two neon green missiles with fins at middle and front.
|Star Brigade Armor Tech (1993)
Appearance: red bandana; black hair and mustache; green and brown camouflage chest armor; neon green left missile launcher arm, upper right arm, and upper legs with brown camouflage; olive green waistpiece, lower right arm, and legs; green boots
|The Real American Hero Collection (1998)|
|G.I. Joe vs. Cobra (2002)|
|G.I. Joe vs. Cobra (Brawler 2002)|
|Spy Troops (2003)|
|Valor vs. Venom (2004)|
- Working names include Rampart, Cinder-Block, Bulwark and Brick-Wall.