Isidro

Isidro is a small, red-haired boy with brown eyes, around fourteen years old and slight of build. He fights with a mix of gear gathered on the road: a cutlass handed down through Morgan, an enchanted Salamander Dagger forged from molten lava by the witch Flora, and a handful of small bombs handed over by Guts, which the fiery dagger can set off in an instant.

Ever since childhood Isidro has burned to become the finest mercenary alive, his imagination lit by tales of the Hundred Man Slayer of the old Band of the Falcon, never realizing that Guts himself is that legend. He treats the swordsman as a father figure while loudly denying it, and though he and the witch Schierke bicker endlessly, with her likening him to a monkey, he clearly holds real affection for her, and a soft spot for women generally. Prone to bragging alongside his close friend Puck, he tends to overstate his own prowess, yet he is brave, quick, and genuinely protective of those weaker than himself.

A year after fleeing his village, Isidro survives among bandits and Kushan raiders by his wits, outsmarting a gang of thieves with tainted food before Guts saves him from Kushan scouts. Awestruck, he trails after the swordsman, at first told to leave for lacking the experience to follow a branded man. He sticks close through the horrors of the Conviction Arc, and in the Millennium Falcon Arc he hurls stones to save Casca and Farnese from a troll, meeting the witch Schierke and joining the group that gathers at Flora's mansion. Under Guts, who urges him to build a fighting style all his own rather than copy anyone, he grows into a capable young warrior, holding his own against seasoned opponents such as Mule, Azan, and Bonebeard, and stands as the only person Guts has ever taken on as a pupil.