I'm assuming an actively hostile creature, kicking and screaming?
Because if it, say, an unconscious (or not) ally, use the carrying and bulk rules.
Because those are clearer when it comes to the bulk of characters and their total equipment? /s
It'll often be the case that mechanically it's easier to Shove the body along than carry or even drag it. The bulk system breaks down profoundly when discussing anything other than standard gear on a single entity.