Hit is a stoic, work-for-hire assassin who is skilled at his craft of taking out people. To Goku, this proves to be a greater challenge than he had ever hoped. While stoic, Hit is shown to be honorable and quite a crafty warrior in his own right, which has never been done before ever in this series.
I put the funny meme lines in the samples, you're welcome!
Anyways, while this performance is nothing new from Matthew Mercer, he naturally pulls off the skilled assassin who gives people chances before resorting to what he was hired to do; put a hit on them.
Aaron Roberts, I'm sorry, I truly think he did the best he could with such material that came out before the full context of the character was shown overseas much like Goku Black, but it was better for Matt to come in the long run. Aaron just feels super uncomfortable to listen to.