Kidnapped as a child by G.U.N., a subdivision of S.H.I.E.L.D., the boy named simply as Sai would become one of the organization's many superhumans. Injected with the Sublime Virus, Sai, now named Ink by G.U.N., became one of their top spies alongside his brother Hydro. However, after being sent by Robert Gonzalez to monitor the Titans, he learned the meaning of friendship and forming bonds, leaving his organization to join only S.H.I.E.L.D. and serve as a active hero.