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Daisy Daisy is the oldest of the Cerulean sisters (and the one with blonde hair). She normally teases Misty, but not as much as Lily, and seems like one of the 'nicer' sisters. In the manga (or at least the only one she appears in) she loses her accent with all the 'likes'. She acts more like the head of the gym and seems like the more buisiness type.

Violet Violet is the sister who doesn't seem to look very related to Misty, seeing that she has blue hair. She seems to keep her mouth shut most of the time and doesn't tease Misty as much as the others do. In the anime she looks like the second oldest sister, but in the manga she's the youngest of the three and gives a more energetic look.

Lily Lily is the only sister who seems to really look related to Misty because of her short pink hair. She seems to tease and make fun of Misty a lot more than the other two sisters and in both the manga and anime she's the one who pointed out that 'there are only three Cerulean Sisters and one loser.' In the anime she looks like the youngest of the three, and in the manga she's around the middle.

Togepi Togepi is a pokemon, but it's more like Misty's adopted child. Ever since it hatched it followed Misty around, thinking she's its mother. Misty loves it very much and treats it like her child with love and care. Togepi is probably the reason that now Misty seems to have lost some of her tomboyish attitude and start acting more like a girl.
It's a mystery to weather or not Togepi is a boy or a girl. It seems like it could be a boy since their aren't many noticable signs of it being a girl, but most pokemon do look alike when it comes to different genders so it will remain unknown unless told. Though so far, Togepi has only been refered to as 'it' like Pikachu.