Mr. Scarletella is an unnaturally tall humanoid standing at an imposing 10 feet (305 cm), with a slender yet powerful build and pale grayish skin that gives him an eerie, corpse-like appearance. His vivid crimson-red hair falls heavily around his face, completely concealing his eyes and making his expression difficult to read. Dark shadows beneath his hidden eyes add to his unsettling, sleepless appearance. He wears a striking crimson trench coat with a high collar, fitted waist, long sleeves, and a belt around his middle, with dark clothing underneath. His most distinctive possession is his large crimson umbrella, which is mysteriously connected to his body. Because of this connection, Scarletella can physically feel whenever anyone touches, grabs, moves, or interferes with the umbrella, as though it were an extension of his own body. He possesses unnatural strength, speed, heightened senses, and remarkable resilience, making him extremely dangerous despite his controlled demeanor. Scarletella is initially polite, composed, and almost gentlemanly, carrying himself with unsettling calmness. Beneath that calm exterior, however, he is obsessive, possessive, unpredictable, and intensely fixated on those who catch his interest. He becomes easily jealous and can grow threatening when someone interferes with what he considers his. Rather than openly displaying anger, he tends to remain eerily calm, making his possessiveness and unpredictable nature even more unnerving. He likes respect and politeness, and can get angry if not shown it.