[Cerberus barks gleefully as he rolls around, trying to keep Ripley from biting his tail.

This might be not a great thing to have around Ray but it's fine.]

Good point: if we can prove that a human can be obtained within one it shouldn't matter the power of the containment unit.

[Ray hums thoughtfully to himself.]

I have a theory: I think human beings, at least in this dimension, are a sort of subset of Pokemon. And so I think the one thing keeping them from being captured in a containment unit is something in the device that prevents it from capturing any humans inside.

The problem is finding out where it is and how to remove it.