Nope, but I think that he is Arnold's family.
Black Hat character (MIB - Man In Black) Arnold's family ...?
Hmmm, I don't really see that connection?
Appears to me MIB is more likely the evolution of Logan over passage of time & game play hardening his character (infatuated with & playing the game his company bought decades earlier ...?), and Bernard the recreation (animation/android) form of Arnold working to maintain the infrastructure of his design intentions.
OR
Maybe Wlliam turning to the dark side ...
How/where did MIB get knife from William ...? Or is there a duplicate(s) knife(s) in the timeline ...?
Appears to be same knife William has in preview, MiB has same knife in EP05 and back thru E01 or E02. Interested to see how the knife possession changes. (image below):
Perhaps, simply a case of characters issued the exact same knife ...? I will be seriously disappointed if this is the case :-/ (I can't remember William ever having a big knife, whereas MiB had that knife and spare barrel & cylinder for his pistol on his belt for multiple episodes.)
I do need to re-watch episodes soon to try & make sense of the various layers of timelines goin' on here, with eye on significance of knife/knives (especially with consideration they may be able to kill outside of games originally presented design parameters.
Cool to see a knife thread started here. Let's get some more pic's of knives from Westworld posted into this thread 👌
Regards,