Big Jim was a line of action figure toys produced from 1972 through 1986 by Mattel for the North American and European markets.

He was renamed Kid Acero in Latin America and, for a short period of time, Mark Strong in Europe.

The action figure's arms were made of a soft plastic/vinyl material and contained a mechanism that simulated the bulge of a biceps when the elbow was bent.

Joe line, having more of a secret agent motif, but also had a large variety of outfits and situations available including sports, space exploration, martial arts, hunting, western, camping, fishing, and photography.

First Editions – Originally, Big Jim action figures came out in a small blue box with red and white stripes.

The original basic Big Jim came dressed in orange shorts with white stripes and included a karate board, a dumbbell and test of strength belt.

Jeff is an Aussie type figure dressed with shorts and brown hat that came with a chopping knife, a chest belt and a bamboo stand.

Josh is a bearded woodsman figure fully dressed in denim vest and shorts with brown boots.

In 1975, Mattel decided to create an extension of the main toy line making Big Jim the leader of a Mission Impossible-like group of heroes for hire.

This series is easy to identify because all related products have a howling wolf as its principal image and character art by Jack Kirby.

[1] On its initial release, the series presented Jim as "Commander", this time as the leader of a counter intelligence strike team.

One year later, a new character named Torpedo Fist, (a former sailor with an artificial hand and forearm) was added to the team.

There were eight characters, four "good" and four "evil", divided into two opposing camps: "Global Command" and "Condor Force", respectively.