Need serious help with physics asset

Hello all! This might be a N00b question but I can’t find any help anywhere for my problem and I think it might just turn out to be something simple or technical (I sure hope not).

My problem: Is there anyway of taking my Mixamo character with animations and applying the UE4 Mannaquin physics asset to it? You my character! I hope this can be done because I’m having real troubles getting my character with it’s current physics asset behaving properly.

Thanks to all those who help! =)

The physics asset will be specific to that skeletal mesh