Jenna

Jenna a 17-year-old Mars Adept from Vale, is the younger sister of Felix. A more outgoing, tomboyish girl than others, Jenna travels the full spectrum of depression and joy through the course of the initial two chapters of the Golden Sun story.

Background
Jenna lived an ideal life with Felix and her friends Isaac and Garet until age 14, when the Mt. Aleph boulder disaster appeared to cause the deaths of all her immediate family, including Felix, leaving her emotionally traumatized for the years to come.

In Golden Sun
Three years later, at which point Jenna has gotten over her initial ordeal but would remain generally morose, Jenna joins Isaac, Garet, and Kraden in a bold research venture into Sol Sanctum and is playable during that dungeon. Her destiny changes when Saturos and Menardi invade the core of the sanctum, and Jenna receives the shock of her life when Felix is revealed to be alive but in league with these strangers. When Saturos' band flees the area with only three of the four Elemental Stars, Saturos has Felix take Jenna and Kraden hostage in hopes that Isaac and Garet will follow Saturos to retrieve Jenna and maybe exchange the last Star currently in Isaac's possession for her. In being the hostage that Isaac and Garet hope to free, Jenna becomes the conventional "damsel in distress" in the first Golden Sun.

In Golden Sun: The Lost Age
Though Jenna is taken against her will, she and Felix eventually talk with each other, and Jenna learns of the true nature of their objective as well as the fact that their parents are alive in Prox, so she joins Felix and hopes that in time Isaac will understand.

Eventually, when Isaac and Felix do join forces after a long series of events and traveling around Weyard and the combined party battles the Wise One's Doom Dragon creation at Mars Lighthouse, which turns out to be her parents in disguise, Jenna is completely crushed by the fact she helped destroy her own parents. Her grief causes her friends to lash out and curse the Wise One's name. But then she sees the resolve of Isaac and Felix in their lighting of the Mars Lighthouse, and finds the will to agree with them that this was the price necessary to save all the inhabitants of Weyard, a price worth it. But when Alchemy is restored, the parents are revived and nursed back to health, obviously placating Jenna and restoring her spirit. Finally, when the Adepts return to Vale to find it is all gone, but all its residents are safe, Jenna finds that she has everything in life.

Fan influence
Jenna is grouped together with Garet in Flameshipping fanfiction and with Isaac in Valeshipping fanfiction. Valeshipping is most likely due to the "Madra Blushing Scene" in which Sheba suggests that Jenna likes Isaac.