Hollow Graham
In Universe Gemini, Hollow Graham was a fairly unthreatening supervillain who had the ability to create “RD hard-light holograms”, including lifelike duplicates of himself. One day, he attacked the city, not for the first time, only to be foiled by Zed Hudson, also not for the first time. He was baffled, having made sure to make his holograms more realistic than ever, casting convincing shadows and reacting to the subtle breeze. However, Zed pointed out that he still wasn't able to make them give off a scent — and recommended that his real self take a bath next time. (COMIC: Zed Vs. The Uniform)
Behind the scenes
As expounded upon in the author's comments for Zed Vs. The Uniform, versions of Millimeter previously appeared in other works by Johann-Octavius Gans, including a comic on DeviantArt, then PowerTrip. There, she had a significantly more alien design, and her birth name was “Sushi Milligan” rather than “Susan Milligan”.