She was given a yellow orb by Queen Nehelenia, which gave her more power, and eternal childhood.
She is the flower magician of the Dark Moon Circus, and the oldest of the Amazon Quartet. She is also very feminine, and is the most mature of the Quartet. Her Remless are Jarajara and Togetoge, both of whom resemble plants.
Selesele always seemed to be fighting Sailor Venus.
The Amazon Quartet were eventually defeated by Sailor Moon, and later trapped in another dimension by Zirconia after switching the captive Sailor Mini Moon around with a doll. Here they began to realize Zirconia's side was the wrong side. Zirconia drained their power, but they eventually smashed their orbs, giving up Nehelenia's power and eternal childhood. They later took the golden crystal from Queen Nehelenia and gave it to Sailor Moon.
Her final appearance was in the final episode, leaving quietly with the others while Pegasus returned to Elysion.
Selesele shoots smaller yellow orbs at her enemies. She also uses Seeds of Unhappiness to make vines attack.