Guest Stars Vincent Tong voices Gene Khan / Mandarin Alistair Abell voices Happy Hogan Catherine Lough Haggquist voices Roberta Rhodes Mackenzie Gray voices Obadiah Stane Fred Henderson voices Howard Stark Brett Dier voices Andy Erwin Brenna O'Brien voices Rhona Burchill / Mad Thinker Brian Drummond voices O'Brian Mackenzie Gray voices Iron Monger Brian Drummond voices Teacher French Tickner voices Prof. Zimmer