Fullback was one of six positions in the sport of grav-ball. Each grav-ball team fielded two fullbacks in a game, whose job was to flank the center striker, with two farther out "on the wing." The role of a fullback was generally to carry the , whereas strikers would dart out to catch passes.
Beck Ollet was chosen as fullback for the AppSci SaberCats during his time at the Junior Academy of Applied Sciences. He was a good friend of the team's center striker, Zare Leonis, but sometimes became rather hot-headed.