Willy Gilligan is a fictional character played by Bob Denver on the 1960s TV show Gilligan's Island and its many sequels.
Gilligan wears a trademark red shirt, pale trousers and white navy cap. He was the first mate on the S. S. Minnow when, during a storm, he threw an anchor overboard without the line attached, which left the boat shipwrecked on an "uncharted" desert island with all aboard.
In the U.S. Navy, Gilligan served with The Skipper, and saved the Skipper from being struck and killed by a runaway depth charge. After retirement, The Skipper used his savings to buy the Minnow, and hired his "little buddy" Gilligan as first mate.
Gilligan's past and family were not mentioned during the series, except for his older brother, from whom he swiped his ever-present red shirt, a sister whose best friend was broken up by her boyfriend, and an uncle who was apparently illiterate. He once mentioned he was born in Pennsylvania, but no city was specified. He would sometimes mention his childhood friends, Skinny Mulligan and Fatso Flannigan, possibly implying that he came from a predominately Irish-American neighborhood.
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Official Site: CBS Television
Links: Gilligan Wikipedia page Gilligan's Island Wikipedia Gilligan's Island imdb page