How do I add weight to my actors? I want them to vary from light to heavy and if they are heavy every time they hit the floor the ground shakes a little I want to have weight variety in my fan fighting game it’s like super smash bros. In case your wondering. can someone show me how I can achieve this thank you 
Edit: also I want my weight for actors to also signify if they get knocked off screen easily or how hard it is for them to get knocked off screen