Prism

prism:

A prism is a headmate who hides the system from other people and itself. A prism member tends to be fronting or co-fronting around 90% to 100% of the time. When another headmate fronts, the prism member will cover them and most often act like them without it being blending or blurring.

The prism member can be considered as a wall between headmates and the outer world, and have the sensation of playing a role.

Related Terms
Prism is similar to to term shell. However, shell is term typically used by programmed DID, OSDD-1b, and OSDD-1a systems.

A prism member can be considered the host of the system, and can have additional role(s).