Guenael Lee is a creation of Gremmy Thoumeaux's ability, The Visionary, initially believed to be a member of the Wandenreich's Sternritter with the designation "V - Vanishing Point".
Guenael appears as a short, elderly-looking man with an oversized hairstyle. His lips do not fully close, revealing large teeth, and his legs seem disproportionately short compared to his torso. He wears glasses and has a lazy right eye. A head adornment attached to four points on his face completes his look. His attire is a variation of the Sternritter uniform, featuring a hooded trench coat.
He enjoys tormenting his victims by using his power to vanish and reappear, posing taunting questions in the process. Guenael tends to judge people based on their appearance, such as when he refers to Yachiru Kusajishi as a 'wild brute' and comments on her hair color and overall features.
During the Wandenreich's second invasion, while 4th Division Lieutenant Isane Kotetsu heals some wounded with the help of 11th Division Lieutenant Yachiru Kusajishi, the invisible Guenael asks Isane if she thought they wouldn't be found. As Isane struggles to locate the source of the voice, he appears behind her and grabs her, laughing and saying he'll disappear again. Before he can vanish, Yachiru punches him, but he disappears at the moment of contact, causing confusion. He then proceeds to hit Yachiru, laughing and revealing his epithet and power.
