Karl
Background
Karl Stern is an illegal arms dealer. He is divorced from Louise Mackey and his son is Rex.
During the events of Airwolf: Season 3 Episode 8 Annie Oakley played by Art Hindle
On a dark road, a convoy from the FIRM is driving when Karl, Slade, Larson, Valentine and Burt set a trap. They cause two cars to explode which forces the convoy to stop and the convoy members are then shot to death. Karl and the others then steal the Mongoose, a laser weapon from one of the convoy vehicles. Slade picks up the badge of one of the dead FIRM operatives named Patrich Coe and tells Karl stealing a weapon wasn't part of the deal. Slade wants to renegotiate the deal and Karl warns him not to get greedy. Karl, Slade and Valentine test out the Mongoose for Leo Martin and Karl offers to sell it for 10 million dollars. Leo accepts Karl's offer and tells him he is to deliver the weapon to an Eastern Bloc country. After Leo leaves, Slade approaches Karl and again wants to renegotiate how much he is paid for being part of the theft. Karl threatens Slade and after he walks away, Slade looks at the FIRM badge he took. Larson shows Karl a mold in appearance similar to the Mongoose in shape. Leo meets with Karl again and Leo offers help to Karl if he runs into any trouble by transferring the Mongoose through Mexico and then Cuba. Karl arrives at Silver City and offers to drop his his custody fight for Rex if Louise agrees to take her show to Europe, including East Berlin. He says he will only require 30 percent of the gross, which he needs to pay back his debt. Later, Louise helps Stringfellow Hawke attempt to stop Karl, but Burt sneaks up and makes Hawke and Louise drop their weapons. Valentine and Burt stay to kill Hawke while Karl and Larson leave with the Mongoose and take Louise as a hostage. Larson spots Hawke chasing them and Karl starts shooting at him and Airwolf with the Mongoose. Karl manages to damage Airwolf, but Louise jumps out of the truck. Hawke then blows up the truck with Karl, Larson and the Mongoose shortly before they reach Mexico.