Blathereen only appear in Dr. Who
"We are blathereen!" - The blathereen The blathereen are the main arch rivals of the slitheen but are related. Like the slitheen they are from
Raxacoricofallapatorius but they are law abbiding, they even help arrest the criminal Slitheen, although they are law abbiding, some Blathereen are corrupt one notable example was a blathereen couple who tried to swarm earth with a deadly rack weed to gain money. like the slitheen they are killed by viniger.