Is their any Asian American heroes?

If by hero you mean someone who has achieved something outstanding, there are many such as Nobel Prize-winning physicist Steven Chu, skater Michelle Kwan and cellist Yo Yo Ma. If you mean, hero as in combat hero, there are still many. Sergeant Leroy A Mendonca, Corporal Hiroshi H Miyamura, Jose Calugas, Sadao Munemori and 22 other Asian American won our country's highest award for bravery, the Congressional Medal of Honor.