Ane Tranetzki played the role of Derek. He was seen delivering a package to Sun, which was later revealed to contain chocolates, a file and a pistol.
As a crew member, he was in the production staff in episodes "?", "This Place Is Death" and "LA X, Part 2"; he also has the (uncredited) role of "Best boy grip" on "The Life and Death of Jeremy Bentham" and "Recon", appearing in the Lost on Location featurette for the latter episode.