Who is Raymond Sintes? What is "the word around the neighborhood" regarding Raymond?

Reputed to be a pimp (That's the word on the street!),Raymond also lives in Meursault's building. He befriends Meursault because he is willing to listen and he helps Raymond get back at his cheating mistress. They become pals and he intertwines Meursault in his conflict with the Arab Meursault ends up shooting. He also testifies for Meursault but ends up making Meursault look like his accomplice.