Yeah same dude this game has a great twist an mystery.
Hmm about Walter have some other personality i doubt it
because (if you not yet read Lars special eps ) it makes senses.
i think walter had an trauma about threathing sort of in the past. causing his inner feel come out . and the walter mom said who is me to make sure he doesn't wrong to call Walter and Herbert .
(i want discuss more but thats gonna be spoiler Gils and Lars special eps).
Sometimes walter is kinda peculiar .