Isidro

イシドロ

Isidro, a runaway brat turned thief, dreams of becoming a great swordsman, which led him to tag along with Guts. Despite his lack of strength and skill, he uses his small size and agility to his advantage, along with various tricks and tools. He has a huge ego and plans to become the very best; he initially intended to "observe" Guts and steal his "techniques" to surpass him. But he slowly starts to realize the inconceivable difference in strength between him and Guts, though there may even be ways for him to become a formidable warrior...
His most important role, however, is probably to serve as comic relief along with Puck.