It refers to becoming Zeta Altman, because his mantra is "Oh!" It's impressive because it's very spectacular. But this word can't be used as the official name of Altman, so when translated, it has the flavor of Altman's name and becomes Ous, that is, Ous Altman.

The source of this stalk:

The reason why Yao Hui has this nickname is mainly because of the performance of the recent plot. Originally, in Zeta and other physical battles, Zeta Altman could forcibly control Yao Hui to complete his physical transformation even if he didn't want to transform, which once made people feel that Yao Hui was also a tool that could not have self-domination.

If Yao Hui doesn't want to, Zeta will basically lose its combat capability. It can be seen that Yao Hui directly affects Zeta's entire will and actions. Whether Zeta can fight or not depends on Yao Hui's face. This time, Altman became a tool of the human body. Although Zeta is conscious, if the human body fails, Zeta will be seriously injured after the first battle with the cruel dumpling of the universe.

This setting is surprisingly reasonable. On the one hand, it explains why the alpha form has become the basic form in the real sense, and also makes it clear that Zeta is a temporary patchwork of a seriously injured body and a suspended human body. Once the human body is autistic and the spirit is affected, Zeta will be left to play alone and will return to a state of serious injury. So there was Altman with Yao Hui as the core, who was ridiculed as Osman.

The usage of this stalk:

At the moment when the cosmic monster arrived on the earth, Zeta Altman and Osman met, and the battle story of two hot-blooded youths began.