Change your officers' portraits.
Open the console (by default bound to control+backspace)
Use the command barbershop <officer name> <portrait id>
<officer name> Can be either the full name, first name, or last name of the officer. Use player to change the player portrait.
<portrait id> is the filename of the portrait you want to change to.
ex. barbershop Ultra Deimos portrait_diktat07
barbershop player portrait29
Look for the filenames in mod folders as well as in starsector-core/graphics/portraits.
This will only work for portraits that are marked as available for use by the player faction.
To force change to a reserved portrait (such as a named character), pass the relative path of the portrait file from the mod or starsector-core directory and the --force flag.
ex. barbershop player graphics/portraits/characters/andrada1.png --force
Note: Not all files work. If you get a blank/black portrait, use the regular command to reassign the portrait back.