Residue

Residue:

Residue is caused when a headmate leaves front or a layer/area of a system and leaves an echo in front or that area. The next headmate to front might find themselves prompted to type, speak, or act like the headmate that left or might be confused on things they like or dislike. Some headmates might be more prone to leaving residue than others.

Related Terms
Echoes are similar but don't inherently stay in any part of the system.

Bleedover and passive influence describe similar sharing of feelings or mannerisms, though they usually refer to interactions rather than something being "left behind".

Switchlag may be caused by residue.