A Shadowcloak was a traditional garment of the Umbaran people of the Ghost Nebula. They were made up of numerous strands of a light blue material. When seen in the ultraviolet spectrum, it appeared to have numerous colors that had no name in most sentients' tongues. These cloaks appeared to be a riot of colors to species who could see into the ultraviolet, including colors such as berl, crynor, nusp, and onsible. They were used for spying and assassination attempts for they would be virtually undetectable to other Umbarans. Sly Moore was often seen in a Shadowcloak.
- Star Wars: Episode II Attack of the Clones (First appearance)
- MedStar II: Jedi Healer
- Labyrinth of Evil
- Star Wars: Episode III Revenge of the Sith