A Blue Rhapsody, true to its name, has a smooth, conical, blue body with a Heartless emblem emblazoned on its chest. The top of its body flares outward and forms a jagged “collar” below the Heartless's spherical, pitch black head. It also wears a conical, yellow hat with a black band around it and a jagged brim and a thin, curled tip. Like many Heartless, the Blue Rhapsody has glowing yellow eyes. Its seemingly useless feet sport three small, thin toes.
Like most of the other Heartless in its family, the Blue Rhapsody's name is comprised of a color—in this case, blue—and a musical term—in this case, a rhapsody, an instrumental composition of irregular form, often incorporating improvisation. The name could also be derived from George Gershwin's "Rhapsody in Blue", a popular musical piece that was featured in Disney's "Fantasia 2000".
Blue Rhapsodies hop around near the ground instead of flying normally like other Heartless of its kind. They utilize Blizzard magic, and in compensation they are weak to Fire magic and give the player two (eight after rescue) Tech Points for using such magic against them. Blue Rhapsodies also absorb any Blizzard-based attack that is cast upon them by any party member.
- Blizzard: Launches a single Blizzard spell
- Hat swipe: Spins around while using the tip of its hat like a whip
- With the yellow hat, blue robe, and glowing yellow eyes, the Blue Rhapsody bears a striking resemble to the traditional Black Mages from the Final Fantasy series.
- Although unintentional, the name of this Heartless could be a reference to the musical composition Rhapsody in Blue by George Gershwin, composed in 1924, however reproduced circa 1999 for the Disney movie Fantasia 2000.