De sua página oficial de Star Trek :
Starfleet officer aboard the U.S.S. Enterprise under the command of Willard Decker and later James T. Kirk. She was serving as relief navigator when the Enterprise intercepted the V'Ger machine lifeform. When Ilia was abducted by V'Ger, DiFalco replaced her in her post on the bridge.
Ela foi interpretada por Marcy Lafferty , a segunda esposa de William Shatner, casada com ele de 1973 a 1996.