Cross-Country's real name is Robert M. Blais, and his rank is that of sergeant E-5. Cross-Country was born in Greensboro, North Carolina.
Cross-Country's primary military specialty is armor, and his secondary military specialty is heavy equipment operator. His father was a bulldozer operator, and his mother drove a grader, therefore he had a natural affinity for heavy machinery, coupled with an uncanny sense of direction and fearlessness under fire. He is a qualified expert with the heavy laser cannon, M-16A2, M-2 50 cal. MG, and .45 auto-pistol.
Cross-Country appeared in the original G.I. Joe animated series voiced by Michael McConnohie, as one of the main characters in the second season. He first appeared in the animated series in the second season episode "Arise, Serpentor, Arise!" Part I where Beach-Head tells General Hawk, Duke, and Flint that Cross-Country is putting a tape deck in his H.A.V.O.C. Cross-Country states that it would be for fighting music especially when the other Joes would want to beat him up. The character enjoys listening to country music during his appearances. He wears various Confederate clothing articles from the Civil War including boot leggings, and a soldier's infantry cap.
He also has appeared in the following episodes:
- Into Your Tent...
- Joes' Night Out
- Most Dangerous Thing In The World
- Nightmare Assault
- Raise The Flagg
- The Spy That Rooked Me
G.I. Joe: The Movie
Cross-Country also appeared briefly in the 1987 animated film G.I. Joe the Movie.