Fun fact: the story mission dialogue never refers to Gargoyle with any actual pronouns, it just says "the hacker" when referring to Gargoyle. My theory is that they are nonbinary, although it could be possible they have no canon gender, like how ULTRAKILL characters have no canon height (source: hakita, the lead dev).
I noticed this back when the story missions were first released. I thought it was easy to spot so I didn't bring it up, but it seems like most people don't pick up on it because they aren't familiar with nonbinary people.
I also want to mention Gargoyle fits several nonbinary stereotypes: a. naming yourself after your favorite word, b. having an appearance that makes people guess your genitals with 50% accuracy, c. adhd, d. femboys and trans women are known for being programmers/IT