The Vulcans in Mt. Zublo are usually very hard to kill. However, they are worth 300 exp a throw, which at that stage in the game is a lot. Use this trick to kill them easily. First, before entering Mt. Zublo, buy a large amount of Molotovs (20-30) from Wyndia. After buying these, go into the volcano. When you meet a Vulcan, get one of your characters to use one Molotov on the Vulcan. It should heal it and the message "Vulcan begins to move!" should appear. After that, destroy it. Ice spells are very effective and the Jump skill (if present) also works well.