Ash and Harry sound really killer. I like both of them a ton too. :D

I thought it'd be cool if Angel looked to Dresdin and Harry for some gun chatter, since I'm considering having Angel start out more so defensive than offensive, but wants to get there. He has a couple of push daggers for when things get close and personal, but nothing like cool choreography or a good grip on guns haha! Plus he and Harry could talk money, whether that'd lead to some positive bonds or antagonism. (It's cool since perhaps Angel's banned from touching it since he might steal it all from himself. XD)

Also I've mentioned before, Angel with Joni/Wrath could be interesting too, since he has facial numbness and Angel relies a lot on both body language and expression to tell what others are thinking or planning. As for Ash, maybe Angel was the one who sold him the sedatives? Maybe? (Unless you have the backstory behind that mapped out already haha.) Might be interesting to see a couple of characters have some ties before joining the Sinners. Just some thoughts haha!

Angel's a bit of a platonic flirt as well, so I look forward to seeing him chat up Sloth and hopefully the upcoming Lust too.

These just popped into my head for general interactions/relations for Angel at least, but I'm up for anything. :)