In Gravity Falls, Li'l Gideon appeared to truly feel that if he cannot have Mabel, no person can. Detlef manufactured yet another overall look in the 3rd-year finale "Li'l Sebastian", where Tom and Jean-Ralphio hired him to perform for their new leisure organization, Entertainment 720. His only job was to shoot basketballs around the office environment Detlef experimented with giving them business tips, but they disregarded it.