Little My

Description
Little My is a small humanoid called a Mymble. She wears a red smock with a large, pink bowtie as well as tall black boots. Her smock also has five big, dark gray buttons going down the back. She has a large head with auburn hair and a bun on top, making her head resemble an onion, according to Snorkmaiden. She has green eyes.

Personality
Little My, despite her size, is very fierce. She is highly independent and unafraid to take charge, going so far as to speak for all of her siblings and act as their leader.

She is mischievous and mean, though sometimes she is mean for the sake of others and with good intentions. She laughs at Moomintroll's bad poetry and says Ninny must look an "awful fright" if she's invisible and that she won't have a face until she learns to stand up for herself. Other times, she is mean for the sake of being mean, like spraying Sniff with water or stealing Moomintroll's room and the interior of Moominhouse. She is surprisingly observant.

She often talks about ants and how she eats them.

Mymble
Mymble is Little My's mother and appears to be one of her older children. Little My is loyal to her and helps her take care of her numerous siblings. Mymble is rather inattentive to Little My and doesn't notice that she left without her on various occasions.

Snufkin
Snufkin is one of Little My's siblings. In the original books, she is older than Snufkin, though so far it's unclear if she's older than him in this adaptation. They are not seen interacting very often but seem to respect one another. Snufkin is able to call her a "little one" without her biting him, unlike Moomintroll.

Siblings
Little My's relationship with her siblings isn't expanded on to any significant degree but she is the leader of them and they, in turn, listen to her and respect her.

Moomintroll
Moomintroll is an older brother figure to Little My and she frequently bothers him. She also often picks on him, making fun of his larger frame and big nose as well as insulting his poetry, though she has good intentions. She is mean to him but she's mean to everyone else as well.

Sniff
Sniff is someone Little My enjoys bullying, including spraying him with cold water. She uses him to convey messages to Moomintroll. When Moomintroll invites Mymble over to come and retrieve Little My, she takes Sniff with her and thus likely perceives him as a friend. However, it's also possible she took him with her to annoy Moomintroll.

Snorkmaiden
Snorkmaiden is one of the few people that Little My shows mercy to. Although she does once crash Snorkmaiden and Moomintroll's date and laughs, she is laughing at Moomintroll's poetry rather than Snorkmaiden. She's expressed she thinks Snorkmaiden's interest in romance is gross in front of her and subtly insults her weight, but otherwise does not go after her. In fact, Little My readily allows Snorkmaiden to touch her, rather than avoiding touch at all (like with Moominpappa) or biting the person who wants to touch her (Moomintroll).

Moominpappa
Moominpappa is, by proxy of Moomintroll, a father figure to Little My. She shows concern for him though, for the most part, leaves him alone. She catches when Moominpappa is feeling irritable and bottling up his anger quicker than the rest of the Moomin family.

Moominmamma
Moominmamma, by proxy of Moomintroll, is a mother figure to Little My, though not her actual mother. Her actual mother is Mymble. She treats Moominmamma as a mother.

Thingumy and Bob
Little My has shown resentment for Thingumy and Bob, talking about how their relationship with Moomintroll parallels hers with her siblings. She says that one day, she was the apple of her mother's eye, though someone smaller and cuter came along and she was forgotten. She's glad that she's taller than them and that she finally gets to be the big sister, which only makes sense when compared to Moomintroll, as she is taller and likely older than her 12 other siblings. The only sibling taller than she is happens to be Snufkin.

The Lighthouse Keeper
The Lighthouse Keeper is Little My's good friend. They became very close in the time when Little My was interrogating him to figure out what happened to the "last" lighthouse keeper. They enjoy one another's company and the Lighthouse Keeper gives Little My many nicknames.

Trivia

 * Although she is primarily called Little My, her actual first name is just My.
 * Little My is only seen drinking milk throughout the series.
 * Also, she puts ice in her milk.