Sour Sweet is a character in My Little Pony Equestria Girls, however in Alternative Universe she is the counterpart of Fluttershy, who in this version is villainous, while Sour Sweet acts as Fluttershy and is the generous of the Shadowbolts, who in this universe are more loving. In Alternative Universe, she is one of main protagonists in Equestria Girls Alternative Universe. She is a pure good version of her original counterpart.
Sour Sweet in this version is calm, compassionate, kind, gentle and loving, unlike her original counterpart who was arrogant, competitive and bad, pressing Twilight Sparkle, along with her colleagues to force Twi to unleash the magic. However in Alternative Universe, Sour Sweet looks like the personality of her pony counterpart, except that she is bitter and sour, which in this version her sour features have completely disappeared, leaving only her friendly, gentle and very peaceful features. She has a deep love for animals and her opposite version is Fluttershy, who in this universe is villainous and competitive and bad. Sour is also afraid of Fluttershy, because she is a tough girl and can be very cowardly when she can't fight back Fluttershy's threats or insults towards her or her friends. Sour is a friend who is willing to help and encourage others to be kind, even to Fluttershy (in this universe), trying to make her no longer bad.
Personality in Fanon Series Edit
Sour Sweet in the Fanon series, has the same personality as the alternate universe series. She still keeps her personality intact: sweet, gentle and friendly, from the alternative universe, the only change is that in the fanon series, Sour Sweet is a little more cowardly and shy than in the alternative universe series.