I feel like dumping lore on Boing Sans sense he uhh.. he just exists according to the public so rant under cut
Boing isn’t necessarily linearly one identity, Boing is actually a virus inhabiting a Sans much like Fresh but also kinda like those zombie fungi in ants, taking over the body while the host is forced to watch, and it isn’t just one host, it’s multiple at once, Boing just uses Sans as the imaginary, but they controls, Undyne, Asgore, Mettaton, and etc all the same, the only one not fully controlled in the au is Papyrus because Boing knows it brings Sans torture seeing his brother alone, scared and confused half infected but still his own.
Also… if you couldn’t tell Boing is absolutely transcoded, reason being the actual Boing virus identifies as a girl but is a girl in a male host body mainly but she’s a virus so like genderless actually.
Also Boing thinks She’s a girl named “Amalia” who’s a hacker girl who actually likes all the pink gamer cat things, Amalia was the one who implanted Boing into the internet in the first place because she was bored, knowing damn well it thought it was her,
Boing has different stages of being well virus shown, when the virus is least visible is how I normally draw it, as Boing!Sans, in the host body, taking on the appearance of a Sans to interact and fuck with other AUs, the 2nd form is half and half, the virus seeping through like in the drawing I made with the giant gaping hole in Sans’ head with a hand coming out. But except I recently redesigned it to have demon horns, a bigger eye in the hole, a Cheshire grin, and black bones. The 3rd form is the docile virus form with a boing being in the outside a host form to scare people, she took a lot of inspiration from the roaring knight and papyrus, you’ll see at some point, the 4th is when they’re a mass of glitches eyes and claws, completely abstract, how they looked before settling on a form and host.
Form pronouns:
In Sans: He/him
Half virus but in sans: He/they
Fully virus: she/they
Abstract virus: she/its
So far that’s all I’ve developed but just wanted to say it