Yuka Ueshiba

Yuka Ueshiba is one of the primary antagonist in Oyasumi Pretty Cure Z. Yuka is the self-proclaimed leader of the mysterious Night Terror Precure. She's by far the most dedicated and serious of the group and both Homura and Chie manage to get under her skin a lot. She transforms into Cure Toxic, who has the power over poison and plants.

Personality
As the (self-proclaimed) leader of the trio, Yuka is the one who takes their mission very serious. Well, she actually takes pretty much everything serious. Yuka is a mature, collected yet cold and reclusive girl, armed with a silver tongue and venomous words for each and every situation. She prefers to not get too close to people and hates being touched, and touching others. She cares a lot about her appearance and considers Mayu her rival in beauty. She's also a huge fan of detective-novels.

Relationships
Homura Takeda

Chie Hayase

Yue Kara

Nemu Yozora

Mayu Hoshizawa

Sayo Asahi

Makura

Cure Toxic
"A seed born from a clever heart, Cure Toxic!"

Cure Toxic is the Pretty Cure alter ego of Yuka. She represents poison.

Attacks

 * -|Attacks=
 * Acid Spray
 * Decay Dance

Trivia

 * Yuka always wears magical gloves due to her poison-touch, which came with her powers
 * As seen in her profile, she has a huge family. Yuka rarely mentions her family but, according to her, it's a "complicated mess".