Blue

Blue is highly determined and serious about his hero duties. He is ambitious and motivated by his goal to surpass his father Blast. He possesses a strong sense of morality, striving to protect people from monsters and opposing anyone who obstructs this goal, including his superior Fuzzy. He has a short temper, becoming annoyed with Genos after being stopped and interrogated during his pursuit of Sweet Mask, and he shouts at Forte when the latter mentions his father. Despite this, Blue genuinely cares for others, as demonstrated by his anger towards Shell King when the latter monster injured his team members and his concern when rescuing a group of heroes from several monsters.

Blue is a teenager of presumably average height, often displaying a serious and determined look. He has light hair that falls in bangs over his face, and his multicolored irises are light near the center and dark toward the edges, resembling those of his father Blast. During his introduction, he wears a loose-fitting, light-colored jacket with a high collar, paired with drawstring cargo pants featuring multiple pockets, complemented by dark socks and light sneakers. Additionally, Blue wears arm gauntlets similar to his father's. Beneath this outer layer, Blue has a well-defined and muscular physique. He wears dark wristbands, a skin-tight dark compression tank top, and matching full-length leggings. Later, he dons a zip-up vest over a full battle suit. Blue's full appearance.png|Blue's full appearance. Blue's physique.png|Blue's physique.