Sosuke Aizen

Sosuke Aizen, is the keeper of the largest collection of interstellar fauna, relics and species in the galaxy, operating from the Wa-ria port installation. Through his dealings with Saiyans and the Soul Guardians, he was in possession of one of the Dragon Balls and was nearly able to obtain a second Ball. However, this caused Omega Shenron to attack his museum seeking the Dragon Ball.