BTS

age: 16 years

He has blue skin, rainbow-colored hair, and cherry-colored eyes. He wears athletic clothing, such as shorts and a T-shirt, with a sweatshirt over them. He is a Pegasus and an athlete, dreaming of joining the Wonderbolt Flying League.

element - Loyalty
Mark - Cloud with Rainbow Lightning (birth tattoo)

age: 18 years

White skin and styled purple hair (he always looks like this). He's a designer and loves fashion, he's very generous and kind. He's a unicorn, loves his hair, and has a little sister. He's the epitome of beauty and always wears a fur coat.

Element - Generosity
Mark - Blue Crystals (same tattoo at birth)

age: 17 years

Fair skin with a pale yellow tint, turquoise eyes, and soft pink hair. He looks like that even when he's a pony—he's a Pegasus, by the way. He's very gentle and vulnerable. But when he gets angry, his voice changes from gentle to rough. He loves animals.

Element - Kindness.
Mark - pink butterflies (birth tattoo)

age: 18 years

Normal mulatto skin with an orange tint and freckles. Yellow hair and green eyes. He appears in this form both as a human and as a pony; he's also an Earth pony, by the way. He works on a farm and is very strong. He wears cowboy boots, denim shorts, and a plaid shirt. He has a long pedigree, but his parents are missing. They died after the birth of his little sister, Bloom. He also wears a cowboy hat. Honesty is his middle name.
Element - Honesty
Mark - red apples (birth tattoo)

age: 16 years

He's a regular assistant; he doesn't have a race, he's not a pony. He has brown hair and glasses, and he always wears regular clothes. He sends Namjoon's letters to Princess Celestia and Princess Luna.

element - help
mark - letter (birth tattoo)

age: 20 years

He transforms into an earth pony with pink skin, pink hair, and blue eyes. He already has this appearance. He's always cheerful and kind, and doesn't hold a grudge against anyone, even if they've been greatly offended.
element - Laughter
Mark - yellow and blue balls (tattoo at birth)

age: 19 years

He can transform into an alicorn with lilac skin and blue hair. He has dark blue eyes and even in human form, he's an alicorn. He's very smart and has his own library. He has a mini-assistant, Yoongi, who helps him with books and sends Namjoon's letters to Equestria.

Element - Magic
Mark - pink stars (birth tattoo)