Fulgrim
She is his mother after the heresy of Horus, she hid in the eye of terror, where she lives in a dimension created by slaanesh, where she and her Legion do whatever they want, she became a demonic primarch or a demon prince
About Fulgrim
She is his mother after the heresy of Horus, she hid in the eye of terror, where she lives in a dimension created by slaanesh, where she and her Legion do whatever they want, she became a demonic primarch or a demon prince