In the arguement of Foster's/cartoon injuries, don't forget that in "Infernal Slumber", Edwardo knocks Terrance out, and of course, Wilt pushes Herriman down the stairs in "Bus the two of us".
As characters who could possibly return, some candidates are Red, (my personal favorite, the man in the cell phone suit), or Bendy. We'll just have to wait and see
One other thing, being Canadian, Teletoon isn't showing new episodes. The only season 5 episode shown so far is "Cheese a Go-Go".
