This is the version of Rook Shar that appears on Earth-68, the universe owned by Dioga beta. She appears in Ryder 10: Wanderer.
Dimension 2 (Ryder 10)
Rook Shar first appeared on her home planet of Revonnah, where her older brother Rook Blonko returned for the harvest. He brought his partner Ryder, who she instantly gets along with, forming a bond. During this time, she obtained Khyber's Pet, naming her Zed. She eventually left Revonnah to join the Plumbers.
After a yet unrevealed incident, Shar gained a vendetta against Ryder, wanting to arrest him at any cost.