Lusamine

Lusamine is a character appearing in Sun and Moon and Ultra Sun and Ultra Moon. She is the president of the Aether Foundation, she was the main antagonist of the games.

She is voiced in the anime by Sayaka Kinoshita

Appearance
Lusamine has blonde hair with silver streaks and green eyes. She wears a white dress with a diamond badge on it, black and white leggings, and boots of the same color, with green soles. Her boots have a medium-height yellow heel to them.

When Lusamine fuses with a Nihilego, she transforms into a dark-colored version of the Ultra Beast with her upper torso in the bell, her legs hanging out of the body and several eyes on her tentacles with gem-shaped pupils.

In Video Games
Lusamine was originally shown to be a kindhearted lady who is willing to "create a utopia for Pokémon". In truth, however, she seeks for beautiful things she could "own". Though her daughter and son both try to warn her about the dangers, Lusamine does not forgive them for betraying her, showing utter coldness, as she does not want anything to stand in her way to obtain the power from the Ultra Beasts. Ultimately, she wishes to live in a world that consists only of her and Nihilego, which she views as a surrogate family that is completely obedient to her. She is also extremely manipulative, taking advantage of Guzma's inferiority complex to befriend him and convince him to serve as a hidden mercenary for the Aether Foundation.

Despite this, it is implied that Lusamine was a genuinely kind person at one time, but after her husband Mohn was lost in the Ultra Beast's world, the grief drove her insane. After her defeat and forceful separation from her Nihilego, she seems to regain some of her sanity and comments that she finds Lillie "beautiful," before collapsing into a coma.

In The Anime
Lusamine is seen as a very serious and determined woman due to her role as the leader alongside her members, Professor Burnet, Wicke and Faba from the Aether Foundation.

Upon her family, she can be very ditsy similar to Lola's when she keeps doting towards her daughter Lillie, like messing around with her hair.

Like Aria, Lusamine is constantly getting abrupt phone calls from her cellphone due to her busy works at the foundation, which makes her unable to spend more time with her children.

When Faba uses Nebby’s power to open the gate of Nihilego’s dimension, Lusamine is not without her darker side upon happily seeing Nihilego enter the Pokémon world. However, she manages to snap out of her darker side and focus on the safety of her children.

As Ash and the gang entered Ultra Deep Sea with Nebby, Lusamine finally shows her darker side of her personality when she was fused with Nihilego by the time Ash and the group including both Lillie and Gladion are trying to rescue her in Nihilego's dimension.

After fusing with Nihilego, she starts acting like a child and keeps telling her children as well as Ash and the gang to go away.