Infected Vector Customization

The Infected Vector Customization is a Rakghoul Event item which can be found in Star Wars: The Old Republic.

Original:

Infected Vector Customization:

Original Vector:

Infected Vector Customization zoomed out:

Original Vector zoomed out:

If this companion is wearing a black outfit in this screenshot, they are likely wearing the Relaxed Vestments armor set with a Black/Black dye.