Sizwe is tall, athletic, charismatic, great at talking to people and has the kind of effortless charm mixed with minor intimidation that Elewa wishes he could do.
He knows that Sizwe isn't a good role model but... he kind of has a real blindspot when it comes to him.
It's going to come down to whether Sizwe is actually a good man or not. Which is an... ambiguous area to say the least.
There is... a limit to what I can tell you without details here to be honest. Use metaphor, allusion, attempt to draw parallels between the situation your character is in and the information that you are planning to reveal... this is all vague stuff and if I have more information I can get specific.