Issac

Issac was a male demigod who is the son of Hephaestus. He is described to be tall, muscular, and slim. His skin color caucasian brunette, and three years older then Percy. He resembles Charles Beckindorf, and has a relation with Victoria, daughter of Apollo.

The Sea of Monsters
Issac was first mentioned in The Sea of Monsters when he was helped fight against the mechanic bulls. Clarisse blamed him and the Hephaestus cabin for letting these bulls attack the camp.

The Battle of Labyrinth
Issac appeared in The Battle of Labyrinth when he was busy building armor and weapons for all the Demigods, Satyrs, Cyclopes, and Demititans. He had short conversation with Charles Beckindorf about the plan, and later spent his final time with girlfriend, Victoria. Issac and Victoria kissed each other before the Battle of Camp-Half Blood started. Issac charged in against a group of Laistrygonians, and killed them by blowing fire. Issac saw that Victoria was injured, and tried to kill a couple of hellhounds that were in his way. He was killed when Logan Ganiero, a demigod son of Phobos. His funeral was held with the other deceased campers that have perished in the battle. Victoria was devastated to lose someone he loved. She died later in The Last Olympian where she reunites with Issac in Elysium.

Personality
Issac never talks as much when he is in Camp Half-Blood. Sometimes, he is busy working on weapons, and uses Greek fire and pots of glue to make as weapons for swords. Though, Annabeth describes as been kind, brave, workful, thoughtful, and respective in his cabin. This is because he took his eyes on Victoria, and started a relationship with her.