Rowena Maclean was an Inhuman who served Gideon Malick's faction of HYDRA. She underwent Terrigenesis after consuming a fish oil supplement which carried the Terrigen Mist. However, her service to Malick changed when she fell under Hive's sway and served the dark Inhuman's conquest in conquering the Earth. After Hive's death, Rowena joined Arnold Brown's faction of HYDRA and became an honory member of the Thunderbolts.
Powers and Abilities
As an Inhuman, Cygnus is able to teleport herself and a certain amount of mass that is in contact with her.