Kay

Kay is the older sister of Garet. Kay has another younger brother named Aaron. She is known to be a bit bossy and very protective of her flower garden. Because of this she gets very mad at Garet near the beginning of Golden Sun, though she still cares about the boy's mission. When Isaac is leaving Vale on his quest, she gives him an Herb as a gift. She is sometimes paired with Felix in fanfiction.

In the Japanese version of the game, she is unnamed and is simply referred to as Garet's older sister in the debug room. It is the debug room, in the English version, where the name of Kay Jerra comes from.