It really depends what key features you’d be looking for. You can certainly create side-controlled, physics based characters and apply force to them when they intersect with another player that is attacking.
You can also have a bounds box that would destroy the character when touched and trigger a delay to reset them.
I’ve not really played SB a whole lot in a while, so I’m not 100% sure on which features you’d be looking for.
List some features and I’m sure people will give you a rough outline for how much work it’ll be in BPs.