Weapon: Lenne uses a summoner staff/rod. Although she is never seen summoning, it’s mentioned. I have picked out a staff for Lenne, based on Yuna’s staffs.
Abilities: Summons- Valefor from Besaid Temple & Ifrit from Kilika Temple
Abilities- Pray & Overdrive
Magic- Cure, Thunder, Aero, Blizzard, & Protect
Personality: Due to the little screen time Lenne has been given, not much is known about her personality. However, it is easy to see that Lenne is a strong willed, caring, and loving person. Her bond with Shuyin proves that she will go to great lengths for love. She proves this with her attempt to save his life and end the war when he attempts to steal Vegnagun. It also shows that she is strong willed when she goes, knowing that it could be dangerous. Another example of her loving nature is shown when the last words she tries to tell Shuyin with her final breaths are, I love you.
Lenne, like Yuna, is a very caring person. She does not want to witness destruction. Although she generally isn’t a fighter, she’ll step up to save what’s important to her. As it’s shown for her songs, Lenne is also a very passionate character. Her pain cuts deep, and she is good at expressing such feelings and heart ache through her music.
Sadly, Lenne’s love could also be considered a major flaw. She rushes in to save Shuyin without a solid plan. She didn’t have an escape route ready, which results in both her and Shuyin’s deaths. If she would have been more patient and quick thinking, they might have had a chance. Love can make her blind.
History: Lenne's story is crucial to Final Fantasy X-2's plot development, despite having only fourteen lines in total. All that is known about Lenne is her heritage as a summoner, her fame as Zanarkand's most treasured songstress and her romantic bond with a certain blitzball star of her time. During the Zanarkand-Bevelle war, Lenne, being a summoner, was expected to fight in the front lines.
Her lover, Shuyin, set out to steal Bevelle's weapon of mass destruction, Vegnagun, to stop the war and to save his love, but Lenne, having learned of his plan, went after him. She finally caught up with him under Bevelle in Vegnagun's chamber, to try and stop him from operating the war machine. The couple was gunned down by the Bevelle forces and though Lenne tried to tell Shuyin she loved him during her final breath, he never heard her. Lenne and Shuyin died in the assault, but Shuyin's soul lived on and grew bitter and hateful for everything that had been taken away from him.
Lenne's spirit lived on and her memories and feelings present in the pyreflies condensed into a sphere, which Kimahri Ronso finds on Mt. Gagazet a thousand years after her death, and which the Gullwings use as a dressphere, not knowing its true nature as the host of Lenne's spirit. Yuna notices a subtle change in her emotions while wearing the dressphere, and appears to be able to connect to Lenne's lingering memories the way no one else seen wearing the dressphere can. The only other person to notice the link is Maechen, who, when shaking Yuna's hand, appears to recognize Lenne in Yuna's gestures.
While wearing the dressphere, Yuna has a peculiar dream of meeting up with Tidus under Bevelle and being shot by Bevelle forces. When Yuna falls through the hole in the Djose Temple's Chamber of the Fayth to the Farplane, she meets up with Shuyin's spirit, who mistakes her as Lenne due to Yuna wearing Lenne's dressphere. During the encounter Yuna feels a surge of emotions she isn't sure are her own or not. Finally, Lenne's memories manifest in the form of a song Yuna goes on to perform during her concert on the Thunder Plains.
During the concert Lenne is seen briefly during the song "1000 Words" when the power of the Songstress dressphere reacts with Shinra's sphere display, showing Lenne's final memories on the screen. Lenne's spirit is manifested and sings alongside Yuna, although in the original Japanese release Yuna briefly turns into Lenne, instead of Yuna and Lenne performing a duet. This is when the party finally discovers that Lenne's spirit lies dormant inside Yuna's dressphere.
As the party venture deep into the Farplane to stop Shuyin, they first try to trick him by having Yuna wear Lenne's dressphere and impersonate as her. Shuyin can see through the guise and goes berserk with rage. After the party defeats Shuyin in battle Lenne awakens and steps out of Yuna's dressphere to soothe Shuyin. She tells him to rest and thanks Yuna as they both fade away.
Wiki wrote that part of the history.
Added History~
Lenne was brought back to life by magic. A society of strong magic users summoned her back into the living world through her soul sphere with ancient spells that were otherwise banned. Knowing that she would still have command over her summons, they felt that it was a wise investment. However, not wanting to word of their secret societies existence to get around, they left her with in the middle of a field, letting her wonder freely until the world would need her.
