Type II

A Type II or K2 civilization has control over more than one stellar system, and/or theoretically is able to harness all the power available in a single star. It extracts fusion energy, information, and raw-materials from multiple solar systems; it is capable of evolutionary intervention, interstellar travel, interstellar communication, stellar engineering, terraforming, and star cluster-scale influence; the resulting proliferation and diversification would theoretically negate the probability of extinction.

Civilizations that are considered Type II
Federation and other races of Star Trek (2.1)

Borg of Star Trek (2.2)

Races from Wing Commander (2.2)

Races in Mass Effect (2.2)

Races in Homeworld (2.3)

Galactic Empire of Star Wars (2.5)

Forerunners (2.7)

Covenant from Halo

Protoss from StarCraft

Tau Empire from Warhammer 40K