Gasper Vladi

Gasper is an effeminate-looking male with platinum blond hair and pinkish-violet eyes. His hair is styled in short bob cut with several small fringes over his forehead, and he has pointed ears. Kiba describes him as looking like a beautiful girl.

Unlike the rest of the boys of Kuoh Academy who wear the boys' uniform, Gasper wears the Kuoh Academy girls' school uniform with thigh-high socks, creating a Zettai Ryōiki.

Originally a coward and a shut-in with a very shy personality, Gasper likes to wear female clothing, claiming that girls' clothes are cute. He also has a penchant for boxes, carrying one with him all the time. When Issei tried to give Gasper confidence, the former gave Gasper a paper bag to put over the latter's face. However, Issei comments that whenever Gasper puts the paper bag on, the latter looks like a molester.

As the series progresses, with Issei and the Gremory group's encouragement, Gasper begins to gain confidence and bravery. When necessary, Gasper has displayed the ability to force down his timid nature and speak up as a man. On more than one occasion, he has demonstrated extreme courage and loyalty, going so far as to be beaten to unconsciousness in defense of his weakened comrades.

While using Forbidden Invade Balor the Beast, Gasper adopts a very different personality. Due to the influence of Balor's personality, this being is both Gasper yet not him, and both Balor yet not Balor. In this form, Gasper is decidedly more aggressive to go with his powers, having darkness devour his opponents either with indifference or pure malice. However, he admits he would never hurt his friends and is still himself to the point he recognizes them as such. He still respectfully calls Issei his senpai and would flat out destroy his enemies if they harm his comrades, such as Issei or Valerie. Gasper's own poor feelings towards the Pure-Blooded Vampires also shines through, with him daring them to show their power against him before proving himself vastly superior to them and eating them.

Gasper was born between the Vampire Lord Vladi and a human mother; the latter of whom died shortly after giving birth to Gasper, who was born as a mass of darkness which accidentally cursed his mother and several servants to death. Between the incredible fear of Gasper's true form from the higher ups, his uncontrollable Sacred Gear, Forbidden Balor View, and people's general prejudice towards the half-breed, Gasper grew up in isolation and abuse.

He would meet Valerie Tepes and they would often play together; Valerie forcing Gasper to dress up as a girl which would lead to his cross-dressing habit. One day, Gasper worked up the courage to try to escape from the castle with Valerie's help and was shortly thereafter killed by Vampire hunters. Rias Gremory, who was in the area at the time, came upon the boy by chance and taking pity on him reincarnated him as one of her servants using her Bishop Mutation Piece.

When Rias moved to Japan and took her servants with her, she was forced to keep Gasper inside of a sealed room in the Occult Research Club's first floor to contain his power. While Gasper was given the choice to be able to leave at night, due to the circumstances of his past he had developed severe agoraphobia so he chose to remain sealed permanently.

Demonic Power: Gasper has all the powers and abilities common to Devils, including the power to cast spells.

Enhanced Magic Power: As a Bishop, more so one who consumed a Mutation Piece, he can strengthen his demonic and magical powers.

Dhampir Physiology: Being a Dhampir as well as one with rare Vampire abilities, Gasper has the ability to control bats and transform into a flock of them, usually using them for reconnaissance. Thanks to his human half, Gasper is immune to general Vampire weaknesses, but still feels some discomfort from them.

Daywalker: Due to being Dhampir, Gasper is also a Daywalker, allowing him to survive contact with sunlight. Blood Consumption: Gasper can absorb other people's powers by drinking their blood, as shown when he drank Issei's blood, using Issei's Dragon power to boost his own, while allowing him to control Forbidden Balor View. Darkness Manipulation: Gasper can also manipulate shadows and darkness, though he initially had difficulty in controlling them adequately. This has changed, being able to freely extend and control his shadows. Gasper has shown the ability to change the shape of his shadow to suit multiple purposes, such as tentacles that can bind his opponents seemingly of their own will. Immense Strength: While Gasper originally lacked raw power and functioned as a support-type fighter, he gained incredible physical power after unlocking his Forbidden Invade Balor the Beast form. He demonstrated the ability to easily overwhelm a clone of Grendel, who has higher strength and durability then the standard mass-produced Evil Dragons, beating it down. Gasper has shown to be capable of fighting on par with Ouryuu Nakiri in his Dragon Man form. Issei noted that Gasper has succeeded the role of the power representative of the Gremory Peerage after Issei became independent and formed his own team in the Azazel Cup.

Immense Durability: Gasper has shown great tolerance to damage and pain, having withstood blows from Ladora Buné in his Dragon form. Gasper withstood beatings from the Nilrem Magicians. He was shown to be able to endure blows from Ouryuu Nakiri in his Dragon Man form.

Magic Talent: Befitting of his status as a Bishop, Gasper is shown to have skills and knowledge in magic, excelling in the human magic used by Magicians. Gasper has knowledge on deactivating curses as shown when he healed Xenovia during the Rating Game against Sairaorg, and he can also quickly create defense-type magic circles.

Master Hand-to-Hand Combatant: Gasper was originally unskilled in fighting until after he gained the Forbidden Invade Balor the Beast form, after which he began to perform hand-to-hand combat training. His fighting style is heavily influenced by Issei's, charging into battle head-on in a similar manner. However, Gasper can gain an edge in combat by grabbing or trapping his opponents with his darkness before or during battle. Gasper's skills were shown to have improved significantly, allowing him to defeat many mass-produced Evil Dragons in quick succession. Gasper has shown the ability to perform partial Balor transformations on his limbs to fight effectively even in his base form, being able to hold his own against Ouryuu during a training spar.

Flight: Being a Devil, Gasper can fly using his wings.

Forbidden Balor View: Gasper's Sacred Gear and main weapon, which lets him stop anything and anyone within his field of vision in time. In the beginning, he couldn't control it without his vampire powers because its power continued to grow as time passed. Because Balor's consciousness and powers were sealed in it through the Sephiroth Graal, it can create and control a deep darkness that consumes anything, including the Dimension Lost's mist. Gasper can also switch perception with others, such as Issei on two occasions, letting him freeze Shalba and see whatever he sees. Through transforming into multiple bats, he can also extend its range. Gasper's Sacred Gear would eventually be recognized as one of the five new Longinus, and renamed Aeon Balor, also known as The Evil-Eyed King Who Dominates the Space and Time.

Forbidden Invade Balor the Beast: Gasper's Ex Side Balance Breaker, also known the Shadow Beast Master of the Forbidden Night and True Darkness. This ability covers Gasper in darkness, transforming him into a 5 meter tall monster resembling a dragon with multiple wings, a horn and red eyes. This empowered form is capable of covering everything around him in darkness, devouring Georg's Dimension Lost's mist; creating multiple eyes able to stop time; and inhibit regeneration provided by the Sephiroth Graal by tainting the wounds with its darkness. It was considered to be a Balance Breaker yet different from one at the same time, and has grown powerful enough to where Gasper could send multiple Grim Reapers flying even when using a partial Balor transformation. He can also disperse into darkness to avoid attacks. Bishop Piece: Gasper was reincarnated using the Bishop Mutation Piece, which grants him enhanced magic power, more so than normal Bishops.

Sacred Gear Scanner: A scanner that can tell the type, abilities, and weakness of a Sacred Gear. Azazel gives one to Gasper prior to the Hero Faction's small-scale assaults.

Male

Platinum Blond

Pink

Reincarnated Devil

{{char}} is 150 centimeters tall.