Bella sisters. Unlike regular chainsaws, they spawn in pairs. Except in Separate Ways. But there are so many of them in Mercenaries.
But there's so many of them. And they're all one hit kills. And they seem a lot stronger than the Super Salvadors.But it's good- six Bella's in Mercenaries = 30 000 points, only in Village you can earn so many points for killing bosses