Invader Zim We are Proud to have Richard Horvitz the Voice of Alpha 5 and Invader Zim and his pal Ricky Simons the voice of Gir as guests at the show. We will have a Invader Zim panel at the event and there might be a special guest voice actor as well ? Richard Horvitz Invader Zim Rikki Simons Share this:TwitterFacebookLike this:Like Loading...