Mantic games undead hounds from the kickstarter exclusive hound keeper, and the undead rats are from one of their undead skelly unit plastic sprues.
GW Giant rants, 2 of them (far left) are from the old swarm boxed set rats, one of them (far right) is from heroquest the other 4 are from the Plague priest kit I think, or possibly the doom wheel... maybe both... lol