Maestro first appears where he helps Hulk and the Agents of S.M.A.S.H. stop a Gamma Meteor (which was previously forewarned by High Evolutionary in "Future Shock") before it can hit the Earth. The other Agents of S.M.A.S.H. first referred to Maestro as "Old Man Hulk." What none of the other Agents of S.M.A.S.H. members know is that Maestro is in the present where he is to make sure that Hulk's gamma infection will lead him on the path to become Maestro. This lasted until A-Bomb met his future self and proved it to the other Agents of S.M.A.S.H. members. With their help even after keeping Maestro at bay, the future A-Bomb uses the Gamma Neutralizer to get rid of the Gamma Infection in Hulk. With even Maestro freed from the Gamma Infection as a result, both Maestro and future A-Bomb fade away upon their future being rewritten.
Personality[]
when maestro was infected with a virus he became crazy and mad, but when he was cured he became calm and collected.
Powers[]
since he's the future hulk he seems to have the same strength as his younger self, and he is immune to injuries.