Well, I meant “canon” as in one facet of their personality, their potential for this particular behavioural affinity. The MC in Fallout 3 (never played it, going off your description here) is neither good or bad, because ultimately, they are supposed to represent the player. They are neither, but they can be both. Hence, both are equally canon. Kathryn is, by this line of reasoning, both a “retired slut” or “an innocent birdie”. At least, she would be if the dev hasn’t confirmed Kathryn had a “wild past before she met Luke”. Which only gives credence to Kathryn’s “slut” personality being the “canon” path, and the resulting paradox of characterization.