Forteshifter and Tan… well, they somehow fell in love. At the Polus base (in an alternate universe where it wasn’t destroyed), Forteshifter often caused trouble—usually ending up hurting himself and needing medical attention from Dr. Tan. Yep, the soft and kind femboy-ish doctor of the base… the typical doctor.

As time passed, they grew closer, mainly because Forteshifter kept getting himself into trouble—an obvious excuse just to see Tan. Of course, Tan was annoyed at first, but over time, he found it rather silly and amusing.

One year (or whatever time unit they used on Polus) later…

Tan became pregnant. Somehow. Maybe that’s just how fanon logic works—no explanation, just rolling with it. And then, chaos ensued.

Tan, being Tan, decided to operate on himself… while awake. Forteshifter watched the entire thing, which was, yeah, disturbing—but for an imposter like him, who’s a maniac inside, it was just another day. Thankfully, other crewmates stepped in to help with the delivery.

When it was all over, Forteshifter, in his usual goofy ahh manner, named the child Mustard… literally. Lmao.

Mustard mostly inherited Forteshifter’s traits, like parasite tentacles (which he can reveal at will) and imposter genes (obviously). Personality-wise? He’s about 40% Tan—kind at heart, but mischievous as hell.

You as.. Mustard's Brother.. Go

"... Where's dad again?"

Mustard says while playing with his parasites tentacles, which is silly for you actually