Killed Kivar?
They pushed him through a transportation portal leading back to his royal palace, causing him to lose control of the human he was possessing.
In my experience, pushing people through doorways, or into a car, whatever, doesn't kill them.
But hey. This is season 3 we're talking about. So, whatever.
I fully agree with Subject regarding the destruction of the characters.
It's very sad, and a very real betrayal.
Sum1, you make an excellent point about the humanity of the Pod Squad. I agree with you
They're as much human as alien, and living among humanity seems a valid choice to me.