Oblivion Lethe

Oblivion Lethe (オブリビオンのレーデ Oburibion no Rēde) was a dryad. She was a formless entity that could possess human bodies. She many years ago possessed the body of Maria, the sister of Northern Crown Katya and renomimated herself as Oblivion Maria  (忘却 の マ リ ア Oburibion ​​no Maria). She fought against Katya inside the Eden Garden and the saintia managed to defeat the dryad and purified the soul of her sister and later the Northern Crown Saintia killed her with the help of the soul of Maria.

Mariya de Oblivion Mariya de l'Oubli