Wizard Boy

Wizard Boy (少年魔術師) is an adventurer who is the younger brother of the late Wizard.

Appearance
Wizard Boy wears a green tunic with blue pants and wears glasses. He has red colored hair identical to his sister. He also carries around a smaller magical staff.

Personality
Wizard Boy is introduced as a quick-tempered and irreverent adventurer, displayed when he shoved Priestess aside, yet blamed her for getting in his way. When Goblin Slayer refused to teach Wizard Boy about goblins, the latter was quick to anger. Wizard Boy is also quite arrogant, repeatedly antagonizing Priestess on more than one occasion; he ridiculed Priestess for failing her promotion exam and disregarded her commands during their following adventure. After his encounter with a troll, he becomes more open to advice and his relationship with others improves.

In spite of his aggressive traits, Wizard Boy holds his late sister in high regard. As such, when people at his academy mocked the circumstances of her death, he became determined to avenge her demise at all costs. Similar to Goblin Slayer, he displayed a fixation on killing goblins as a result.

Background
Wizard Boy went to the same academy in the capital as his sister, but left before finishing his studies.

Goblin Slayer Volume 6
Wizard Boy went to the Adventurer's Guild and stated his intention to kill goblins. When meeting Goblin Slayer, the latter bluntly rebuffed Wizard Boy's request to learn how to kill goblins. When Goblin Slayer learned that Wizard Boy had no place to stay, Wizard Boy was taken to the farm, but ended up staying in the shed due to intervention from Cow Girl's Uncle. At the Guild the next day, Wizard Boy overheard Priestess' conversation over her failed promotion exam and openly ridiculed her, earning the ire of every adventurer in the building. Deciding to intervene, Female Knight told Wizard Boy to slay goblins to back up his confidence, but on the condition that he be led by Priestess.

While venturing a mausoleum with Goblin Slayer's party, Wizard Boy rushed off to find the source of a woman's scream. After using Fireball to kill the goblin torturing the woman, he was cornered by a troll accompanied by a horde of goblins; luckily, Goblin Slayer's party was able to fend them off. Later, while drinking at the tavern, Wizard Boy revealed he had an older sister who perished at the hands of goblins, before he slumped unconscious.

Spells

 * Fireball: By reciting the words "Carbunculus... Crescunt... Iacta!", Wizard Boy can cast a powerful streak of fire. However, he can only use it once a day.