Chris Cook- training to be an MMA fighter, a shell of his former self
Fedorov- burned out, seems to have stopped training as he once did, all size gone and in some photos looks like he hasn't touched a weight in a decade. Unibrow still intact though, no worries there.
The black kid you speak of is Richard Jones. He disappeared to go back to school. Once Dex won the O last year, I think he felt he had another chance, showed up at a contest this year looking pretty horrible, and I believe he's no longer pursuing the IFBB stage.