Wu-Tang Affiliated Rapper Defended By Fellow Rapper ... No Drug Use, Signs of Mental Illness

Supreme -- a friend of Christ Bearer's and a fellow Wu-Tang affiliated rapper -- says he saw nothing in C.B. that would have ever made him think he was capable of cutting off his penis and then trying to kill himself.

As TMZ first reported, Mr. Bearer (real name Andre Johnson) was rushed to the hospital earlier this week after his crazy suicide attempt ... but doctors were not able to reattach his penis.

Supreme says he never saw any signs of mental illness in his friend, and never saw him do any illicit drugs ... just cigarettes, alcohol and a little weed.

Supreme says he visited his friend in the hospital and now it's just time to "let the brother heal."