Sophie Campbell is a cartoonist based in upstate New York. In addition to her work on Teenage Mutant Ninja Turtles and Jem & the Holograms, she is known for her creator-owned series Wet Moon and Shadoweyes.
Brahm Revel has worked extensively in the film and animation industries, most notably sharing storyboarding duties for a time on The Venture Bros. In recent years he's turned his attention squarely to comics, writing and drawing the Marvel Knights: X-Men mini-series for Marvel Comics. He's probably best known (hopefully) for his creator-owned series, GUERILLAS, from Oni Press.