Abaddon

Abaddon is a lava planet, similar to Char, located in or near the Koprulu Sector. It appears in StarCraft: Ghost.

Background
Although there is a Terran Dominion presence on the world, Abaddon seemingly also houses anti-Dominion factions such as the Koprulu Liberation Front and remnants of the UED expeditionary force.

Takeover
Four years after the Brood War, a KLF force took over a Dominion supply depot, holding a Grizzly along with an engineer. Ghost Agent 12-862 was dispatched to deal with the situation but the engineer was executed before she could reach him.

Trivia
Abaddon is probably named after the same realm in Biblical poetry, translated as "place of destruction" or "realm of the dead."