Each character's standard progression in the Sphere Grid is reminiscent of at least one Job Class from previous Final Fantasy games. Tidus is a Fighter-Time Mage combination, Yuna is a typical White Mage/Summoner, Lulu is a pure Black Mage, Wakka is an odd take on an Archer-Green Magenote given his status-inducing attacks fusion, Auron is a FFT-style Knight, Kimahri is a cross between a Dragoon, a Blue Mage and a Red Mage, and Rikku is a wonderful blend between a Thief and a Chemist.
Beam Me Up, Scotty!: The infamous NPC kid in Kilika says, "I'm gonna be a blitzball when I grow up!" It is very frequently misquoted as "I want to be a blitzball when I grow up!"