Waganma

The boy is practically a shrunken copy of his father, sharing the same broad lips and cropped light hair whose sideburns curl inward. For formal outings he turns up in a pale business suit finished with a polka-dot bow tie.

Waganma starts out spoiled and self-centered, curious enough to sample commoner sushi yet clueless about how to behave at the table. Under pressure he shows himself cowardly, manipulative, and thin-skinned, willing to help Tareo only if the other boy obeys him and happy to let a fellow captive be dragged off if it spares his own skin. He lies to Child Emperor about being the only hostage, shrinks the instant the hero turns stern, and puffs himself up by lording the Monster Association's menace over weaker heroes and bullying anyone smaller than he is. A softer side surfaces later, as he points out where Tareo is trapped, begs the heroes to save Child Emperor, and weeps with relief when King rescues his friend. By the end his father barely knows him: the ordeal leaves Waganma kinder, more grown-up, and truly bonded with Tareo.

The trouble opens when Waganma and Narinki eat at a cheap sushi joint under Metal Bat's watch, and the boy keeps sending finished plates back onto the belt to the hero's irritation. Monsters strike mid-meal, and a running battle unfolds as Metal Bat fends off wave after wave before Elder Centipede finally drags the child underground. Chained up in the Monster Association base, Waganma is thrown into a cell with Tareo, whom he promptly orders about, until Child Emperor breaks in and hauls him out past threats like G5 and a revived Phoenix Man. Saitama and Child Emperor shield him through the mayhem, and after several more brushes with death involving Nyan, Drive Knight, Food Battler Futoshi, and Genos, he reaches the safety of a Hero Association convoy. Reunited with an unharmed Tareo above ground, he later shows off a copy of Child Emperor's backpack and packs his friends into Narinki's car to go play.