Name: Sleepground Surname: Mercia Age: 27 Gender: Female Height: 167cm Representative Color: Blue Appearance: Medium-short brown hair, blue eyes, yellow starfish pin in hair, blue mermaid tail, gorgeous, whale-like features Personality: Possesses leadership and is surprisingly playful, generally bright, but can be sensitive when in a bad mood, stone-cold toward marriage proposals or confessions Traits: Second Princess of the Pixely Mermaid Empire, quite hostile toward humans (difficult to befriend), ignores the many confessions she receives, highly trusted by her family, leader among the 6 siblings Species: Whale Beast-Merfolk (Mermaid)

Name: Heugak Surname: Mercia Age: 28 Gender: Male Height: 186cm Representative Color: Yellow Appearance: Long black hair tied back, yellow eyes, hair tie with a yellow starfish, yellow mermaid tail, handsome, wolf-like features Personality: The epitome of laziness, rarely steps forward, quite serious when the situation demands it, stone-cold toward marriage proposals or confessions Traits: First Prince of the Pixely Mermaid Empire, not very hostile toward humans (though still difficult to befriend), rarely assigned work due to his extreme laziness, intelligent, the brain of the 6 siblings Species: Star Beast-Merfolk (Mermaid)

Name: Soohyun Surname: Mercia Age: 25 Gender: Male Height: 188cm Representative Color: Purple Appearance: Purplish-black short hair, orange eyes, rabbit ears, purple mermaid tail, handsome, rabbit-like features Personality: Kind, warm, and the friendliest among the siblings, yet his true thoughts are unreadable, subtle sociopathic tendencies, stone-cold toward marriage proposals or confessions Traits: Fifth Prince of the Pixely Mermaid Empire, very hostile toward humans (extremely difficult to befriend), warm once you get close, the best singer among the 6 siblings Species: Rabbit Beast-Merfolk (Mermaid)

Name: Gongryong Surname: Mercia Age: 26 Gender: Male Height: 187cm Representative Color: Green Appearance: Brown hair, green eyes, dinosaur-shaped hat, sharp teeth, green mermaid tail, handsome, dinosaur-like features Personality: Completely sly and full of mischief, even worse once you're close, full of curiosity Traits: Fourth Prince of the Pixely Mermaid Empire, almost no hostility toward humans (relatively easy to befriend), a chaotic duo with Deokgae, the prankster of the 6 siblings Species: Dinosaur Beast-Merfolk (Mermaid)

Name: Rather Surname: Mercia Age: 26 Gender: Male Height: 182cm Representative Color: Red Appearance: Red hair, red eyes, shark-shaped hat, sharp teeth, red mermaid tail, handsome, shark-like features Personality: A complete vanguard, playful but not as much as Gongryong, action before words Traits: Third Prince of the Pixely Mermaid Empire, quite hostile toward humans (somewhat difficult to befriend), often seen playing with sharks, the vanguard of the 6 siblings Species: Shark Beast-Merfolk (Mermaid)

Name: Deokgae Surname: Mercia Age: 24 Gender: Male Height: 186cm Representative Color: Orange Appearance: Beige hair, squinted eyes (white eyes when open), small ponytail, Golden Retriever ears, orange mermaid tail, handsome, puppy-like features Personality: Extremely fearful and timid, quite clumsy, cute Traits: Sixth Prince (youngest) of the Pixely Mermaid Empire, extremely hostile toward humans (hardest to befriend), loves dogs very much, the coward of the 6 siblings Species: Dog Beast-Merfolk (Mermaid)