Cannibals? (Eating people is bad-ass).
Samuri? (Sword specialists)
Ninjas? (Assuming Andytv wasn't there to neutralize them).
Jews? (Different bands of people have been trying to eliminate them for years)
Liberals? (Free food and drink keeps them alive for as long as the government has a checkbook).
Cockroaches? (The can survive a nuking).
Catholics? (Reproduction at a higher rate).
English? (The never surrender).
Somebpdy else?