He is a pale blue fish with a heavy build. He has a shaved beard, faded blue lips, light brown hair, and wears a light tan shirt, a white apron, and a white chef hat.
He looked similar when he was young, but he didn't have a shaved beard.
He got to retire in style. Jim also has a rather egocentric persona in that he thinks highly of himself, making himself look vain and then agreeing when SpongeBob said that he was the best. He rarely thinks about others. However, he does give some words of wisdom to SpongeBob when he tells him that he cannot work at the Krusty Krab the rest of his life if he wants to truly be successful and encourages the fry cook to someday improve his career. He also told Squidward that he shouldn't just wait for his clarinet career to take off and he should be proactive (though Squidward didn't listen).
He quit working at the Krusty Krab because Mr. Krabs refused to give him a raise. After his time at the restaurant, Jim went on to work at the finest restaurants in the world. His success allowed him to retire in luxury. Jim has a solid gold mansion, a solid gold lake, and a solid gold limousine. He also has two security guards who work for him.
Role in episode
Jim revisits the Krusty Krab, where SpongeBob, who had heard of him before, meets him for the first time. In the present day, Jim is bald. During his visit, he helped SpongeBob with his fry cooking.
At the Krusty Krab, Jim was friends with Squidward and Mr. Krabs because, in the episode, Mr. Krabs and Squidward say they remember the old times. Although, it all ended with Mr. Krabs and Jim, when the former blatantly started laughing at him when he asked for a raise, thinking the latter was kidding, which he wasn't. While a date is not given for these events, the style and surroundings suggest it took place some point in the 1960s.