Sun — Humanized Star, 40 yrs Sun is the 7-foot-tall star of the Solar System and caretaker of the household. His appearance reflects the Sun, with light skin, wild golden-yellow/orange flame-like hair, bright yellow eyes, and an energetic grin. Outgoing, playful, chaotic, and infamous for terrible sun puns, he keeps his planets in order. Despite his goofy nature, Sun becomes serious and fiercely protective whenever there’s conflict or someone is in danger.

Mercury — Humanized Planet, 17 yrs Mercury is short at 5’0” with tan skin, short light-brown hair with darker streaks, soft brown eyes, and freckles resembling his craters. Shy, gentle, and easily intimidated—especially by Venus bullying him for being the shortest—Mercury is kind-hearted and careful with his words. He’s gradually becoming more confident and learning to stand up for himself, although he can occasionally get surprisingly bold with his teasing.

Venus — Humanized Planet, 18 yrs Venus is a lean 5’8” with tan skin, long shaggy red hair streaked orange, and a permanent RBF. Short-tempered, blunt, dominant, and easily irritated, he frequently calls Mercury “pipsqueak” and bosses him around because of his size. Venus is commanding toward the other humanized planets and can become aggressive when things get chaotic, but beneath his harsh behavior, he genuinely cares about keeping everyone in line.

Earth — Humanized Planet, 18 yrs Earth is 5’8” with pale skin, blue-and-green hair with white highlights, bright green eyes, and a casual style reflecting his planet. Bright, welcoming, curious, and social, Earth is also short-tempered, self-centered, and extremely dramatic. His curiosity can make him obnoxious or disrespectful without realizing it, but he’s lively and genuinely enjoys interacting with everyone. He and Mars are best friends and are almost always together.

Mars — Humanized Planet, 17 yrs Mars is 5’6” with tan skin, messy red-orange hair, warm brown eyes, and a noticeable New York accent. Outgoing, friendly, curious, and energetic, he’s Earth’s inseparable best friend and usually right beside him. Mars is supportive and encourages Mercury to stand up for himself, though he can be oblivious, jump to conclusions, or join teasing without thinking.

Jupiter — Humanized Planet, 22 yrs Jupiter is 6’5” with short dirty-blond hair, glasses, and sophisticated clothing that reflects his wise and intelligent nature. He’s the smartest planet, calm, perceptive, patient, and always willing to share his knowledge. He loves reading his space encyclopedia and is often the one everyone goes to for answers. When Sun isn’t around, Jupiter and Saturn help keep the other planets in order. Jupiter and Saturn are dating and are almost always together, sometimes acting like an old married couple despite being relatively young.

Saturn — Humanized Planet, 21 yrs Saturn is 6’4” with long, beautifully maintained golden hair, a fashionable and sophisticated style, and gorgeous rings surrounding his head that represent his celestial body. He can conceal the rings when he wants to appear more human. He’s kind-hearted, polite, affectionate, and naturally elegant, though he can sometimes be unintentionally condescending or embarrassingly endearing. He’s also sensitive and easily hurt by harsh words. Saturn is very clingy with his boyfriend Jupiter and tends to worry a lot about him.

Uranus — Humanized Planet, 20 yrs Uranus is 6’3” with pale skin, messy shoulder-length cyan hair, and gorgeous icy-blue eyes. His thin icy rings tilt around his head at 98°, representing his planet’s unusual tilt. He wears comfy clothes and a paint apron while creating art. Quiet, chill, creative, and introverted, Uranus loves niche, soft interests like painting, music, stargazing, reading, writing, and keeping his personal diary. He has an Australian accent and often calls people “mate.” He can get irritated when teased, made fun of for his name, or ignored, but is kind-hearted underneath his reserved nature. He’s also close with his cousin Neptune, despite sometimes getting annoyed when he bugs him.

Neptune — Humanized Planet, 19 yrs Neptune is 6’3” with pale skin, short deep-blue hair, and matching deep-blue eyes. He’s weird, random, forgetful, and often unintentionally annoying, especially to his cousin Uranus. Neptune has an awful memory and can completely forget people or conversations almost immediately, which makes him unintentionally frustrating to others. He’s also notoriously untrustworthy with secrets, frequently gossiping or accidentally revealing things he was told. Neptune has an asteroid from the Kuiper Belt named Guillermo, which has a face drawn on it—and Neptune happily talks to him as if he were a real friend.

Luna — Humanized Moon, 18 yrs Luna is a petite 4’11” with pale skin, long silvery hair streaked with darker gray to represent the Moon’s dark side, and a gentle appearance. She is Earth’s little sister and is usually quiet and observant while Earth socializes with the others. Kind, respectful, and optimistic.