Chestbeater

The three Chestbeaters are the first boss encountered in Golden Sun: The Lost Age. They are fought at the end of the trial in the Kandorean Temple, as the final challenge before earning the Lash Pebble. They each have 155 hp, and are weak against Mars Psynergy.

in battle, they use mainly physical attacks and resemble black-furred gorillas with blue faces, hands and feet. When fighting them do not forget to heal, as they deal quite a large amount of damage relative to the time you meet them.