Elaine

Elaine (エレイン) is the sister of King of the Seven Deadly Sins. She is also the Guardian Saint of the Fountain of Youth, who was killed by a monster of the Demon Clan at the Fairy King's Forest. She now resides at the Capital of the Dead.

Appearance
Elaine has neck-length cut hair and long eyelashes. She wears a single one-piece dress which is tied together with a butterfly knot at the back.

Personality
Elaine is shown to be a kind girl who cares deeply for Ban and is willing to forgive King for abandoning her. Although, she is also slightly disappointed and unhappy about King for leaving her and their country for over 700 years.

Elaine doesn't trust humans a lot due to them always trying to steal the Fountain but trust Ban because she saw what's in his heart. Elaine later have feelings toward him and wished for him to take her away.

Elaine is shown to be embrassed easliy due to Ban skinny dipping and when he heard what she want Ban to do.

History
700 years ago, King left the country and Elaine lived years of solitude, protecting the Fountain of Youth as the Guardian.

Possibly a long time ago, before Ban met Meliodas and the others, Elaine was killed by him whilst she was protecting the Fountain of Youth.

Abilities/Equipment
Elaine power comes from either the Fairy King's Forest or from her own. Elaine can blow away and manipulates the tree branches to immobilizes bandit by grabbing all of they limbs. Like her brother King, she can fly too. She also seem to be strong enough to protect the Fountain of Youth without anyones help.

Abilities

 * Tree Manipulate: Elaine can manipulate the trees to grab or crush the bandit who came for the Fountain of Youth.
 * Wind Control: Elaine can control the wind to blow away bandit who came for the Fountain of Youth.

King
King is Elaine brother and was the king of they country. Elaine was upset at King for leaving her alone to protect the Fountian of Youth but was willingly to forgive him and ask him to save Ban.

Ban
When they first met, Elaine was trying to get him out of the forest because of the Fountian but when she read his heart, she knew that Ban doesn't want to destory the forest. They later bonded and Ban promise her she will find her brother to free her. It seem that Elaine holds strong feelings toward Ban.

Trivia

 * In Arthurian legend, Elaine of Benoic is the wife of King Ban, who is the namesake for Ban, and Lancelot's mother.