These two seemingly contradictory characteristics of Justin McKoy's personality can both be true:
Justin McKoy is, by nearly universal agreement of multiple people around the Carolina basketball program, one of the nicest people you will ever meet. Not one of the nicest basketball players. But one of the nicest people.
Justin McKoy also can be kind of a pain on the basketball court.
That's "pain" in the very best way, in almost a Joel Berry-type way. McKoy competes at everything. In the same way that he's developed his basketball skills, he's had to learn how to make his competitiveness work for him rather than against him.