Shadow Weaver, formerly known as Light Spinner, is the second-in-command of the Horde. She a sorceress of dark magic and runs and oversees the operations of the army. She is also the one who raised both Adora and Catra as her wards. Later, due to the loss of her runestone, her position went to Catra.
Shadow Weaver was known as Light Spinner. She was one of the most powerful sorceresses. Light Spinner was expelled from the group of sorcerers for wanting the whole poer for her. They took advantage of this event to create a story that she had not left the group was waiting for her revenge. She probably meets Lord Hordak, and he makes her a sorceress of the shadows, and the second-in-command of the Horde. He also give her the force captain (princess) Scorpia's family's runestone: The Black Garnet.