Gasper Vladi  

Gya-kun, Gya-suke, ギャスパー・ヴラディ

A young man who is half-vampire and cross-dresses, possessing the ability to pause time for those he sees but unable to manage it. He was sealed by Rias under elders' orders until she grew up enough to control him. Despite his inability to fully command his powers, drinking Issei's blood can significantly improve them. Initially timid and reclusive, Gasper enjoys wearing female clothing due to their cuteness. He also carries a box with him at all times. Although Issei tried to boost his confidence by giving him a paper bag to wear over his face, it made Gasper look like a molester. As the series progresses, Gasper becomes more confident and courageous. He first appears in Volume 4 after Rias was granted permission to release him (to his dismay). Along with Issei, Xenovia, and Koneko, he learns to control his Sacred Gear and improves significantly with Azazel's guidance and Sajis assistance. During the attack by Khaos Brigade on the leaders of the Three Factions, Gasper was captured and used against his will before being rescued by Issei and Rias, who utilized Issei's blood to enable Gasper to control his power as they overpowered the female Magicians.