Kyle

Kyle is the father of Isaac. He himself is a Venus Adept like his son.

In Golden Sun
Kyle appears briefly in Vale at the beginning of the story at Jenna's house, trying to rescue Felix from the water. After Mt. Aleph's boulder falls upon the house, Kyle is presumed dead.

In Golden Sun: The Lost Age
After lighting the beacon of Jupiter Lighthouse, it is revealed that Kyle is still alive. It turns out he was saved by Saturos and Menardi after the storm three years ago, and is well cared for in Prox.