From game manual (Road Rash)
Ikira is the coolest export from Japan since the Sega. He's into the American scene (which happens to include unnecessary violence). Ikira is basically nice - he's only in it for the money.
From game manual (Road Rash II)
In his native Japan, there is only one god: Elvis. Ikira is so devoted that over the years he has come to resemble the King. Raised on two-strokes on the crowded streets of Tokyo, he was known to ride up on the sidewalks when traffic got thick, smiling apologetically as he upset strollers and crashed through fruit stands. Caught between two worlds, Ikira has the rare combination of genuine virtue and burning desire to win. A good friend to have.