The character Ewing is most passionate about is the one he knew least about going into this project. He's also a lightning rod for many of the X-Men: former villain Fabian Cortez, whom Ewing affectionately refers to as "yuppie Iago."
"We needed someone who would provide a little friction. He exploits energy, and he's connected to the medical team in that he's a healer but also an energy manipulator. He's extremely useful all over the station, and nobody trusts him because he's Fabian Cortez and he's terrible. He's on very thin ice from the start. I love his ponytail, and Valerio draws him as this kind of Patrick Bateman."
The intensely negative fan reaction to Fabian's reappearance confirmed Ewing's instincts that he'd be the perfect antagonistic presence. "In universe and out of universe, everybody hates him. He's got the perfect power set for the role he's in but everyone is like, 'Can we please find someone else? Anybody else.'"