Zagi appears in the home world of the highly intelligent alien that TLT know as Visitors, a jellyfish-like race, as an answer to this problem. Space Beasts were threat in the galaxy that stores the Nebula M80 in the Scorpio constellation. Overall, in his actions, Zagi proves himself to be not only sadistic but a remorseless entity that hungers for destruction in an unreasonable blind rage. Zagi's sadistic nature was proven when he proudly laughed at Nagi Saijyo's face about murdering her parents and possessed Hajime Yamaoka in a gruesome manner by killing him slowly and painfully. In the final episode, he shoots his own comrade, Shiori Hiraki in the chest as soon as she became useless for him and he gloats to how he easily manipulated them by mocking his comrades as a 'tools'. He is the one who summoned and stopping Space Beasts at will, empowering them painfully when they battling Nexus in Dark Field-G, and feeding them to stronger.

In the last arc of Nexus, as Zagi, his true personality was clearly highlighted as he loves manipulate people like puppets for his own benefit and if they fail to carry out orders, Zagi will mercilessly kill and discarded them. He is also very competent in hacking and mastering nearly all scientific fields as he smart enought to analyzed the quantum properties of Ultraman's Meta Field and tracks down TLT's security system when Night Raider save Ren from experimenting him.

~ Dark Zagi after murdering Nagi's mother.ДЄs Ishibori, he is very quiet and rarely interacts with others.

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