Shinso are known as the most powerful vampires in existence.
A Shinso is a vampire that has blood more powerful than that of regular vampires. Their power cannot be passed down through reproduction, but instead by injecting their blood into others. Among many powers they have are high-speed regeneration, a monsterous aura, and the ability to absorb other monsters for their abilities. Shinso appear to have long lifetimes, and slowed aging; Akasha Bloodriver looked exactly the same after 200 years had past since Alucard's sealing.