Xing and Xang
Divided spirits and servants of Chaos
Xing and Xang are opposed spirits who can unite as Xiang. Lore’s Xing embraces cruelty, while Xang tries to protect the Hero and refuses to be silenced. Their union does not resolve that conflict. Drakath’s substitution of the good Xang with her evil Mirror Realm counterpart once left two evil spirits in Lore, making the identity of each half important to their behavior.
Their connection to Drakath is also more complicated than simple obedience or hostility. Xiang challenges him in the Plane of Monsters, but Xang summons him because she wants to go home. When the sisters separate and return to his side, Xang welcomes the reunion while Xing is more openly dismissive.
An account from the distant past describes a pair named Xing and Xang who say they were once one person. That Xang recalls losing their children to Kolyaban.
Sources
AQW Wiki: Xing · AQW Wiki reference · The exchanged Xangs (game-scene transcript) · The sisters separate · Heroes of Balance in the past (official release)