[Astyanax]

Ok let's break this down etymologically.

Does KO stand for Knockout or is his name Koby?

We know he is a wrestling fan.

What are the chances his name is Koby and he is a wrestling fan? I think 62%

If his name is Koby he is 55% likely to be black.

Thus I concur he is either Koby Jones or Kobe Bryant.

I hope this helps.