| This minifigure has only appeared in video game(s)|
Although this article is about an official minifigure, it never existed in physical form, or appeared in any official LEGO sets.
Billy Brennan is a character who appears in LEGO Jurassic World.
Billy Brennan is a young and overenthusiastic graduate student at Grant's dig site. He accompanies Grant to Isla Sorna and gets stranded on it with him, Paul Kirby, and Amanda Kirby. He later steals Velociraptors eggs, to sell them for money to fund the dig site. Velociraptors then start stalking the group to get their eggs back. Grant is disgusted when he learned of this and said to him that he is "no better than the people who built this place." But he later redeems himself by saving Eric Kirby from Pteranodons. Although the Pteranodons gave him many injuries, he survived, but gets separated by the others and is presumed dead. He was believed to be dead when the Pteranodons attacked him but was later discovered to still be alive, just barely, and was later rescued by the United States Marine Corps. Billy does managed to give Alan his hat back.