Original Big Jim Characters:
- Big Jim: the basic good guy leader of the PACK
- Big Jack: Second in command, African American
- Big Josh: similar to Big Jim, but with a beard
- Big Jeff: a blond who was also Jim's opponent in the Olympic boxing match set, even though both Jim and Jeff are on the American team.
- Dr. Steel: came with a steel right hand and an iron pipe, with a dragon tattoo on his chest. Most of the time, kids thought of him as being an evil villain for the first series, but it turned out he was also one of the good guys, as he re-appeared as an official member of the P.A.C.K. In other countries he remained a villain.
- Chief Tanuka: Jim's Native American friend. He came with bow and arrow, and was the first character who wears a wolf tattoo, which eventually became the P.A.C.K. image.
Big Jim's P.A.C.K. was an extension of the main toy line in 1975, making Big Jim the leader of a group of heroes for hire. P.A.C.K. stood for Professional Agents, Crime Killers.
P.A.C.K Series Characters:
- Dr. Steel: also a character from the first series, came with a steel right hand and an iron pipe, and a big dragon tattoo on his chest, for most of the time, kids thought of him as being an evil villain for the first series, but it turned out he was also a good guy, as he re-appeared as a member of the P.A.C.K series, who fought against the evil Lord Zorak, ruler of the Underworld.
- Big Jim Commander: with wolfpack tattoo on left hand / dressed in white pants - blue sweater with white wolfpack logo - shoulderholster and silver gun - braun boots - wolfpack belt - silver arm communicator for right arm.
- Big Jim Gold Commander: with wolfpack tattoo on left hand / dressed in yellow pants - black sweater with gold wolfpack logo - shoulderholster with silver gun - black boots - wolfpack belt - silver arm communicator for right arm.
- Torpedo Fist: with wolfpack tattoo on left hand / dressed in blue pants - red + black striped shirt - blue hat - braun boots - wolfpack belt / came with expanding right arm , torpedo fist action.
- The Whip: with wolfpack tattoo on left hand / black bearded figure / dressed in black pants - black vest - black commando hat - black boots - wolfpack belt / bandolero - whip - 3 boomerangs with brown chest belt - black chop stick - boomerang throwing device on right arm.
- Warpath: with wolfpack tattoo on left hand / Indian Figure / dressed in denim pants - leather vest - black top hat - braun boots - wolfpack belt / silver bow with wolfpack logo and 3 silver arrows with the wolfpack logo on top / braun chest belt for the arrows.
- Zorak, the ruler of the Underworld: 2 faces which can be changed from normal into a hulk like villain / dressed in black pants and red cloak with gold chains & black boots.