the black rider. no, seriously.
i think i'm on as darkmaydestroy, but if not, then i'm on as draenagh. (and if you must know, lj's varis.)
didn't leave the stream of time quite as peacefully as merriman and has been working these past 6 years at getting back.
so, in reality if you see the black rider contacting you and acting like he's just any person off the street, go with it. you're not likely to know who he is anyway. except if you're will. or merriman. but then he wouldn't be talking to you, so no trouble there.