Flea

Flea, real name unknown, is a fictional informant and a minor recurring character featured in comic books published by Marvel Comics. He first appeared in Luke Cage, Hero for Hire #5 in January, 1973. He made five appearances in total, not counting reprints and flashbacks.

Biography
Flea was an informant of Luke Cage who helped him track down the heroin that had been used by Willis Stryker to frame him. Flea was poisoned by Cottonmouth's men and when Cage found him, he was just able to whisper his assailant's name before he died.