|Real Name||Ho Yinsen|
|Powers and Abilities||Iron Man Dio Armor|
|Family and Friends||Tony Stark|
Ho Yinsen was a doctor who helped Tony Stark on the road to becoming Iron Man.
His early history is unknown.
Yinsen was captured alongside Tony Stark. Yinsen performed a surgery that allowed Tony to live with shrapnel in his heart.
He and Tony tried to escape but he was wounded. Tony believed he had died and left him behind.
The two fought several times until Yinsen realized the truth about the Zodiac. He then sacrificed his life to save Tony's.
In the Comics
Yinsen did not survive after Tony's escape.