Lionel

The King Of Beasts Transformation Lionel was a belt shaped teigu that transforms its wearer into a beast, instantly increasing one's physical strength and abilities. It also amplifies one's sense of smell, to enable scouting.

History
According to Leone, she bought this Teigu from a black market shop without knowing that it was a Teigu, as no one had been able to synchronize with it in order to make it function, implying that it is one of the 24 Lost Teigu.

Abilities
The Gravekeepers have applied the same transformation abilities that they use onto Lionel.

When activated, Lionel enhances the user's five senses greatly and gives them danger beast characteristics, such as lion ears, paws and a tail. It also greatly increases their regeneration. The belt also gives her the ability to locate specific enemies over a long distance. It is also observed that some personality traits are affected as well, even if Lionel is not active, such as when Leone marks Tatsumi as her man by licking him.

Trump Card
Regenerator (獅子は死なず, リジェネレーター, Rijenerētā): The trump card of Lionel, which grants its user high-speed regeneration. Its extents are unknown but Leone is able to heal her removed eye, sliced breast and injuries over time. By combining with Cross Tail's abilities, the user can reattach their missing body parts such as arms, legs etc. The user can also regenerate by eating other animals as shown in Leone's fight with Dorothea.

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Lionelle Лионель