Jack can be protective towards Oggy, as shown in ' Flower-Power' ' The Rise and the Fall'. Jack almost always helps Oggy when he's in trouble, whether it be from the cockroaches or getting stranded in space. Jack tends to be Oggy's partner in many episodes. He also had a Ferrari in The Pumpkin that Pretended to be a Ferrari. Throughout the series he mainly has a small green monster truck looking jeep, With flame paint jobs. Jack owns a yellow safari jeep that is mostly used in Life's a Zoo.

Jack owns a orange van that is mostly used in Drone Out of Control!. He is an olive green cat with a pink tummy, white paws and feet, yellow freckles, a sharp tail and hair coming out of his ears. He tends to play the 'straight-man' to Oggy and the roaches's antics. However at times, Jack can show his nicer side when he's not focused on stopping the Cockroaches or acting villainous. He is perhaps the easiest target in the show, mainly because his rage gets him too unfocused on either getting rid of the Cockroaches. He also sometimes bullies Oggy, either moving him when he's in front of the TV, trying to beat Oggy in a race, or just going plain insane. Jack often builds something to try and destroy the Cockroaches, or any other insect that roams Oggy's house-and while he has had some success, more often than not his plans backfire. More often than not, he's focused on getting rid of the Cockroaches or doing something selfish.

He's quick-tempered, violent, focused, self-important, sometimes lazy, and mechanic. Jack can be easily described as the opposite of Oggy.

Oggy and the cockroaches