Dr Retentive was a KORPS agent.
Retentive was the head of NEOCORTEX. It was activated in Trojan KORPS and she appeared in One Flew Over the Budgie's Cage. Her KORPS division was concerned with biological research. She is sent to work at a top nightmare treatment centre, that attracts important people (including MI9 agents) and introduces a new form of treatment: happy chairs. The happy chairs take away all the information on their MI9 lives from the agents. Frank nearly has his secrets taken by the machine, but was saved by his MI9 bravery medal and Retentive is arrested.