The Aquarius Vertex (アクエリアス・バーテックス), also known as an Mizugame Type is an enemy of humanity, and the eighth Vertex the Hero Club encounters. It is based after the constellation Aquarius the Water Carrier.
The aquarius vertex entire body as a whole resembles a fish even with its attacks being water-based. It's main body is a dark blue rectangle with an antenna like stick on its head. Its connected to two water spheres through spikes. On its bottom it represents almost a tail and almost looks like white cloth.
It first appeared in episode 5 of Yuki Yuna, the vertex didn't do much to attack. The Leo Vertex then fused it along with the three other vertex. It aimed for Fu first as it encased her in water almost drowning her before she went Mankai. They soon started sealing and Yuna managed to destroy the large soul that came from space in Mankai form.
This Vertex mainly relies on the twin water spheres on either side of its body to launch water-based ranged attacks, such as bombarding the Heroes with a high-pressure water jet or releasing a volley of high-density water spheres.
- The water spheres not only hit hard, but they can also attach themselves to the body of the target instead of shattering once they hit.
- As this Vertex mainly uses water-based attacks, it may sometimes try to drown its opponent instead of relying on brute force. Notable targets were: