Here's a quick knight concept...
There's certainly a forest or tree type of theme here, but I admit the branches on his helmet might be a bit much.
Still I kept them because they're just weird lookin
There may be some Dark Souls inspiration here, but having just recently gotten my Platinum on Dark Souls III, I didn't want to let go of the franchise just yet.
So some of their knight style may have been allowed to seep in. At this point it seems that we can only imagine future souls games, rather than await them.
If nothing else, you can just imagine this guy's the jerk who stole all of your souls forcing you to rage quit and tell your friends you hate Dark Souls. lol