The various pieces of a Red Armor appear throughout the Phil Cup, and a final Red Armor appears in the Hades Cup. In the original version of Kingdom Hearts, these Heartless were simply named Guard Armor.
The Red Armor's body is divided into several pieces — a body, a head, two arms, and two legs — none of which are directly connected to each other and all of which can act independently of the other. The Armored Torso is vaguely hour glass-shaped. It is coloured magenta with a light grey, diamond pattern around its waist, and has dark pink additives on it. The Heartless emblem is emblazoned on the center of the armor.
Its head is magenta, spherical, and sports one silver spike, two red ones, and a silver faceplate with several holes in it. Both of the Gauntlets are magenta with wide wrists and three silver, segmented fingers. The Hammerlegs are short, magenta, and ends in large, hammer-like, black feet. All of the pieces of the Red Armor seem to be hollow.
The Red Armor's name clearly references its reddish coloration and its armored body.