Roscoe Ruskin

 was a jazz player on the Roscoe Ruskin and the Storyville Players. He developed a romantic relationship with Cindy Wu. He was possessed by King Nocturne on the Red Note. (COMIC: The Jazz Monster)

He sacrificed himself to kill King Nocturne. (COMIC: Music Man)

In a parallel universe he survived and became a jazz legend. Dorothy Bell managed to pull one of his records through from the parallel reality and gave it to Cindy. (COMIC: Old Girl)