Isidro is a wayward youth that ran away from home to become a legendary soldier. He strives to survive by any means. Isidro is a typical headstrong kid that knows everything about nothing. Isidro has some smarts as he is able to get by on his own by using others. He comes to look up to Guts unaware he is the same person that inspired his dream. Isidro strives to prove his worth to Guts and the group he has come to travel with across Midland. Isidro unfortunately only ends being a source of comic relief with his friend Puck the Elf.