|Shadow Hearts: Covenant|
|Location||Hojo Research Lab|
|Item Drops||S-DEF Down 4†|
|NOTE||† Available only during|
playable Ouka sections.
Second of the Mutant Apes created by Kato, he is the "Speak-No-Evil" of the Mutant Apes. he is equipped with tekite blades that can slice through steel. His best weapon, though, is his awesome agility.
Following the trend of the Japanese soldiers sharing names with Japanese military vehicles, like his fellow Mutant Apes, Raiden and Ouka, he shares his name with a WWII-era Japanese fighter plane, specifically the Kawasaki Ki-61 Hien.
The name, Hien, itself refers to the Swallow bird, one of which is tattoed on Hien's combat suit.