Her main outfit consists of a black bicorne, a black coat (which she wears off shoulder most of the time), a cropped, sleeveless red jacket with golden buttons, white notched lapels, and gold trim adorned with a lapel pin in the shape of a pirate ship, worn over a see-through leotard with a black frilled choker or collar, a red ascot with a brooch on it, a red and white pleated miniskirt, a brown leather belt, white gloves, lace-trimmed black or brown thighhighs and high-heel brown leather fold-over ankle boots.

Several pieces of clothing in all of her outfits feature an arrow through heart logo on them, including her hats, eyepatch and ascot.

On October 2020 she got a new gothic lolita costume consisting of a black headwear mini top hat with flowers, a red frilled sleeveless short dress, detached long red frilled sleeves, a black bowtie, a heart necklace, the same leotard as her default costume, black gloves, an underbust corset, a pocket watch, white thighhighs with a white garter belt, a leg ribbon and black mary janes with high heels.

Her third outfit consists of a red string bikini halterneck worn under a black, partially unzipped hooded jacket white short dolphin shorts, an o-ring thigh strap, an ankle strap gladiator sandals, a black baseball cap and heart-shaped sunglasses. A week after her third outfit debut, Marine revealed a variant with unzipped jacket, a wet crop top white shirt, and an untied long hair. This is a result of Marine agreed on a compromise with her manager, who asked her to not use an unzipped jacket without crop top to comply with Youtube's guidelines.

She unveiled her fourth outfit on her birthday livestream on 30 July 2022. In it, she gains a parade band theme consisting of a shako cap with hat feathers and a single plume to the left, a gold-trimmed two-sided fabric jacket (black outer, red inner), and black fold-over high-heel thigh boots.