Gremmy Thoumeaux

Gremmy has a child-like appearance, with messy blond hair, youthful features, and red eyes. His attire is a variation of the Sternritter's typical white uniform, consisting of a loose trench coat featuring a hood and a high collar.

However, this body is only a product of his power. His real vessel is a disembodied brain in a protective casing.

Attention Diversion: If Gremmy shifts his attention away from the target affected by his power, it can revert to what it was before.

Conscious Control: If Gremmy is not careful, he can cause his own death by imagining it. Furthermore, if Gremmy forgets to harden his body, he will be vulnerable to damage.

Imagination Limitations: If Gremmy does not imagine his body to harden to sufficient levels, a strong enough opponent can cut through his body. Also, though Gremmy can increase his spiritual power to match the likes of an individual such as Kenpachi Zaraki, since he could not imagine a body capable of containing that power, it severely damaged his body and killed him.

With a cold and ruthless personality, a trait characteristic of the Wandenreich, Gremmy stood out for his particularly calm demeanor, frequently sporting a placid smile and a certain air of bravado. He was quite cruel, even toying with Yachiru, turning her bones into biscuits and breaking them to make her suffer before she died. Another example of this was his murder of two defenseless captains, after which he boasted about it to the very person responsible for their survival. He also mocked Gwenael 's abilities after injuring him, only to execute him for his weakness. Despite this extreme coldness, Gremmy he's quite respectful of his opponents, stating that it would be rude not to prepare a proper battle arena for the famous Kenpachi Zaraki, and even complimenting him on his appearance, declaring that he looked strong.

He never considers destroying anyone due to his lack of prior experience in combat, but when Zaraki challenged him, Gremmy sensed the hostility and was filled with glee at the prospect of destroying him. At the height of the battle, he created a massive meteor with the aim of wiping out everyone on the battlefield, declaring that he would be the only one left standing. This displayed a genocidal intent and a complete lack of respect for his comrades, casting doubt on his loyalty to his Leader. However, he agreed to fight the assigned opponent on the Quincy Emperor's orders.

He has a desire to show his power to everyone. His defeat proved that he had never boasted of his skill, of which he was very proud, reaffirming the fact that he hadn't used a single finger in his battle, and lamenting his inability to win.

He can imagine everything he wants and it turns into reality thanks to his shrift, but if he wants to manipulate someone's body, he would need to make contact with it first.

A Cube of Water : By using The Visionary, Gremmy can create a large cube of water which envelops his enemy so that he drowns.

Multiple War Artillery : Through the use of The Visionary, Gremmy is able to create a series of heavy weaponry among which can be seen, cannons, machine guns and rifles, Gremmy could also attack with other types of war weapon such as missiles.

Life Creation : Through the use of The Visionary, Gremmy was able to create life, as he did to create Gwenael Lee and grant him additional abilities. This power was not limited to creating other beings, as Gremmy could even create an entire body for himself.

The Enhanced Visionary : Gremmy is able to duplicate himself as many times as he wants. By doing this, The Visionary's power doubles, allowing him to create a meteor large enough to destroy the Soul Society. Gremmy points out that none of his other selves could die or be cut; however, this has a limit, as Gremmy cannot focus on more than one

Exposure to Space : By using this technique, Gremmy can transform an area into the vacuum of space, causing the fluids in his enemies' eyes and mouths to begin to evaporate and their blood to boil upon exposure to space. Gremmy stated that their lungs will also burst and their body tissues will slowly collapse.

Explosive Openings : The clones can generate an opening that can explode, creating a large explosion. Although this doesn't eliminate someone like Kenpachi, it leaves him seriously injured and too weakened to fight afterward.

He was assigned the letter V by Yhwach himself. The Visionary consisted of turning all of the user's thoughts into reality, thus giving Gremmy the freedom to imagine whatever he pleases to change the situation of combat in his favor, creating a great platform suitable for fighting. This ability allows him to alter the terrain of the battle, such as imagining a fissure in the ground, heal his wounds instantly, and he's also capable of altering the opponent's body, although it seemed that contact was needed for this. According to Gremmy's probably arrogant words, The Visionary made him the most powerful Sternritter; However, The Visionary has a major weakness: the risk of dying in battle could become a reality.