Jeff the Land Shark, a character in Marvel Comics, has had several caretakers. Initially, he was introduced in the "West Coast Avengers" series, where he was taken care of by Gwenpool. Later, Jeff became more prominently associated with Kate Bishop, also known as Hawkeye, who took on a significant role in looking after him. Additionally, Jeff has appeared in stories with characters like Deadpool, who also interacted with and looked after him in various narratives. These caretakers have contributed to Jeff's popularity and charm in the Marvel universe.