Grand Theft Auto Trilogy archived sound

Hi, I keep trying to add the cast from GTA III, GTA Vice City, and GTA San Andreas cast to Grand Theft Auto: The Trilogy (2005 Video Game) with the archived sound credit added, IMDB accepts the non important celebrities but the grade A actors it says "Unable to verify" but no matter how many times I explain it with different wording that I was adding the actor who is credited in GTA III.