Jack Kerouac and the Whiz Kids

From Jack Kerouac and the Whiz Kids

Then Falcon tells Dulouz he shouldn't "'trust anybody else in this joint, I'm Vincent Malatesta and I may be an assassin on pay but I'm honest, my father was an honest cabinetmaker.'" If you have any problems, Falcon continues, "'come to me and tell me anything's on your mind anytime. And don't be afraid of me because of my black patch and my reputation.'"
Jack's Glee

Put simply, Kilmer was able to inhabit Morrison. Think back to what he writes early in his memoir about the many characters he portrayed in his movies: "I was and was not the character I played. The character went through me, and therefore was me, even as I went through the character and became him. Pieces of me and pieces of him merged."
More Than Pretending