This little bit where Jack Sr. leaps to the offensive with John wanting to shake his hand as an introduction is why I played up John's interaction with Lyn for the first part of this arc so heavily... I knew I wanted the least little action from him to be the thing that set him off. Like John had zero intention for this reaction. I don't know how well I pulled it off, but that's my thinking on this arc so far. Jack and Lyn's dad's look was something I struggled with for a bit. I wanted him to look enough like Jack that it wouldn't be too much of a leap in logic to understand that there's a familial resemblance... but I also wanted to make him look like his own character. There are also design cues that go into Lyn's psychology a bit too... but that's just me really over thinking things.