This is the 'Silver Age' version of a villain I've used in my games since, oh let's see, about 1983 I would guess.
Ladies and gentlemen, The Prism!
His power is to split into seven different, distinct and seperate people, each with a special power and wearing a variation of Prism's costume (usually featuring only their color, black and white).
I don't remember them all but I do recall...
Red is a 20 something, Caucasian Male with a Southern drawl and heat powers.
Yellow is a 20 something African American Woman with light powers and scientific knowledge.
Green is an older Male, sometimes Caucasian with a Scottish accent (sometimes Native American) with plant and earth control.
Blue is Asian, often Male but not always, with water based abilities.
Indigo often has teleportation, fade, or phase into shadows, and other 'Nightcrawler' themed abilities. Indigo's mask is full-face and no one knows exactly what he, or she looks like.
OK, enough for now. Bedtime.