Angel (Minmatar space) deal and are weak to explosive and kinetic damage. They use target target painters that are mostly harmless.

Serpentis (Gallente space) deal and are weak to kinetic and thermal. They use sensor dampeners that will drop your targeting range.

Blood raiders and Sansha (Amarr space) deal and are weak to electromagnetic and thermal. They use tracking disruptions that will hinder all turret users and neuts that will hinder ships with active tank.

Guristas (Caldari space) deal and are weak to kinetic and thermal. They use ECM that will annoy everyone.

Rogue drones (everywhere) deal various damage types, mostly kinetic, thermal and explosive. They are weak to electromagnetic and thermal damage.