|“||I couldn't prevent the professor from becoming a Maverick. I failed to protect him. But I'm going to fulfill my duty as a bodyguard now.||„|
|~ Shield Sheldon|
Shield Sheldon is a minor antagonist in Mega Man X6. He was a former security guard who committed suicide after the Maverick Hunters deemed his former actions as criminal. However, he was revived by Gate in order to be given a second chance to protect his master.
Shield Sheldon is a loyal bodyguard who's devoted to his job. He has immense respect for protecting others including his creator, Gate. He has his own sense of justice but is somewhat of a vigilante, killing others who becomes corrupted as Maverick. Shield Sheldon is also suicidal, especially when he fails at his duties believing his life isn't worth it if he's useless to others.
Shield Sheldon was once a security guard built by Gate to protect others Throughout his career, he took on many clients and fulfilled them to the best of his abilities, earning respect among the others. One day, he took on a client named Dr. Jim, who was a laser researcher. However, he noticed that he went Maverick and became a threat to the others, and he decided to take upon his own hands to kill him before harm was done. The Maverick Hunters eventually investigated the murder and falsely concluded that Shield Sheldon did this as a Maverick. Ashamed of his actions and accusation, he decided to commit suicide, deeming himself as useless.
During the Nightmare Phenomena, he was revived by Gate as a Nightmare Investigator. He was stationed by the Laser Research Facility where the previous incident occurred. He swore to and X and Zero that this time he will fulfill his duties by protecting Gate, even if it would cost him his life yet again. Shield Sheldon remained loyal to Gate and his duties, even during his last moments.