Julian Grantham is a character from Spaceship 537: Reaching new Planets. He is portrayed by Munro Chambers. He joined Bryan Hubbard's group and went outerspace with him, Kenji Putnam, Anouk Briggs, Isabelle Greenwood, Nina Compton and John Woodward. When their group joined different sides, he stayed on Bryan's side. Later John, together with this two new allies Lauren Marshall and Avalyn Coughlin, made him pay for that by killing him.