They have buttons with the gender symbol on it. Whatever button they have on is the gender they are for that time
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Sans Au Headcannons 2
FanfictionContinuation of my Headcannon book, cause my brain comes up with random thoughts daily(I haven't had any good sleep in a year) These are NOT cannon, don't take these as fact. You can use these in your stories though Undertale belongs to Toby Fox, al...
PJ~ 8
They have buttons with the gender symbol on it. Whatever button they have on is the gender they are for that time
