Sero is mostly known by his hero name "Cellophane," Sero is recognizable by his distinct grin, almond-shaped eyes, and spiked black hair. His unique hero costume features massive, cylindrical shoulder pads modeled after tape dispensers, which tie directly into his Quirk, Tape. This ability allows him to shoot a highly durable, adhesive cellophane-like tape from his elbows to swing from structures, create traps, or restrain opponents.