Name: Neptune Francisco Diaz-Butterfly

Gender: Male

Age: 14

Birthdate: August 11, 2029

Occupation: Crown Prince of Mewni, King-in-training, Echo Creek Academy student

Relatives: Star Butterfly (mother), Marco Diaz (father), Elena Butterfly (younger sister), Esteban Butterfly (younger brother), Terra Butterfly (youngest sister), River Butterfly (maternal grandfather), Moon Butterfly (maternal grandmother), Angie Diaz (paternal grandmother), Rafael Diaz (paternal grandfather)

Friends/Allies: Arthur Lucitor (best friend), Ashley Lucitor (girlfriend), Jared Greason, George, Dennis, Philippa, Katrina, Tom Lucitor, Janna Lucitor

Enemies: None yet

Likes: Video games, food (especially sweets and Mexican cuisine), cartoons, responsibility, doing stupid things, friends, family, pranks, cleanliness, scary movies and shows, dogs, and cats

Dislikes: Bad video games, cruel pranks, disorganization, bees, cheesy soap operas

Abilities: Magic, Mewberty form, combat skills, intelligence, fluency in Spanish and Italian, cooking skills.

Personality:

Neptune is basically a perfect mix between his parents. He has his mother's sense of adventure and his father's cleanliness and a bit of his dorky behavior. He strives to be the best person and king he can be, but sometimes forgets he's still young and he still has time. Nevertheless, he knows how to have fun but also knows when it's time to stop, though he can occasionally come off as a killjoy. There is also a gentler side to him, and he often thinks of others before himself and whether if you agree or not, he might just be a great future king. Just don't anger him too much, or you'll wish you were never born.

Appearance:

He is quite tall for his age at 5'5. His skin is lighter than his father's and his hair is a darker shade of blonde than his mother's. His eyes are blue with a scar over his left eye, which thankfully doesn't affect his vision. He also has purple marks on his cheeks shaped like four-pointed stars.

Outfits:

Royal- He wears a black coat with gold buttons and shoulder pads with a purple sash, white pants, brown boots, white gloves, and a gold crown.

Casual- Here, he wears a purple shirt under a Prussian blue hoodie, black jeans, red sneakers, and a red cap with devil horns.

Trivia:

He has a fear of ducks.

He still keeps the teddy bear he had as a baby.

His favorite colors are green and blue.

He describes his sense of humor as 40% weird/random, 20% high-brow, 10% dark, 10% childish, 20%, potty jokes.

His favorite foods are chocolate, pizza, and burritos.

He is severely allergic to soy.

He has a weird habit of sniffing the individual contents of a sandwich and analyzing it on how to take a perfect bite. He does this when he thinks no one is looking.

He seems impervious to spicy things.

His eye scar comes from a childhood incident.

()()()

Names: Elena and Esteban Butterfly

Age: 7

Birthdate: July 10, 2036

Gender: Female (Elena), Male (Esteban)

Relatives: Star Butterfly (mother), Marco Diaz (father), Neptune Diaz-Butterfly (older brother), Terra Butterfly (youngest sister), River Butterfy (mathernal grandfather), Moon Butterfly (maternal grandmother), Angie Diaz (paternal grandmother), Rafael Diaz (paternal grandfather)

Friends: George, Philippa, Denise, Arthur Lucitor, Ashley Lucitor, Tom Lucitor, Janna Lucitor

Enemies: Bullies

Likes: Their family, friends, nachos, their pets, strawberries (Esteban), Day of the Dead masks (Elena), Death metal, symphonic metal

Dislikes: Bullies, being separated

Abilities: High intelligence in certain areas

Personalities: These two are Queen Star and King Marco's fraternal twins. They suffer from autism, so they are very shy, don't talk much and when they do, it's mostly to their family and friends, take time to get used to new people, can't focus on more than one task, and have trouble expressing emotion. They can't stand to be apart from each other or their big brother, so they tagged along when he was sent to Earth like his mother. However, underneath the surface, they strive to break out of their shell one step at a time.

Appearance:

Both are short. Esteban can be described as a male version of Star with Marco's hair and eyes, while Elena is the opposite, except her hair is also brown.

Outfits:

Royal:

Esteban- An outfit similar to his older brother's except it's blue, he wears black boots, and also wears a gold crown

Elena- A purple gown with white trims, blue flats, white socks, and a tiara

Casual:

Esteban- A baby blue long-sleeved button-up with an image of a narwhal on the break pocket, blue jeans, and black sneakers

Elena- A pink dress under a purple jacket, and she keeps her flats.

Trivia:

They are actually autistics savants

-For example, Elena is a very talented painter and sculptor while Esteban is highly skilled in chess and shown to be able to solve complex equations.

-Another example is that they are very musically talented, being able to play the violin, piano, guitar, and flute with great skill.

They only talk regularly to each other and not much to others.

Elena has a pet snake while Esteban has a tarantula

They see Arthur and Ashley as older sibling figures other than their own.

Why they like death metal so much is unknown.

Elena loves the Day of the Dead masks her father keeps, while Esteban hates them. The same can be said for strawberries, only Esteban likes them and Elena hates does not.

()()()

Name: Terra Butterfly

Gender: Female

Age: 1

Birthdate: July 10, 2042

Relatives: Star Butterfly (mother), Marco Diaz (father), Elena Butterfly (older sister), Esteban Butterfly (older brother), Neptune Diaz-Butterfly (oldest brother), River Butterfly (maternal grandfather), Moon Butterfly (maternal grandmother), Angie Diaz (paternal grandmother), Rafael Diaz (paternal grandfather)

Friends/Allies: Arthur Lucitor, Ashley Lucitor ,George, Dennis, Philippa, Katrina, Tom Lucitor, Janna Lucitor

Enemies: None yet

Likes: Attention, her rattle, booping others, her family

Dislikes: Full diapers, badly-sung lullabies

Abilities: None yet

Personality:

Being a baby, there's not much to say about her. Other than the fact she loves getting attention and she is loved by man beacuase... well... she's a baby.

Appearance:

Her skin is that of her mother as well as her tuft hair, but it has brown streaks in it. Her eyes are unique because her right eye is blue, while the left is brown.

Outfits:

She is almost always seen wearing her pink dress, white socks, diaper, and tiara.

Trivia:

She was born on the same day as the twins. Coincidentally, they said they wanted a baby sibling for their birthday and they got it.

Neptune only lets her play with his teddy bear.

Despite being a baby, she has a decent understanding of her surroundings.

Ashley and Neptune are the only ones who can understand her babbling.