Bio: When Miguel was young, he was caught in a fire that nearly
killed him. Batman saved him, but in order for Miguel to gain his trust,
Batman had to take his mask off to show the boy that he was human. After
Miguel revealed this on national news, the Kobra gang captured Miguel
and attempted to use their mind-imaging device that would reveal the
identity of Batman to them. Miguel confused the Kobra gang, however,
when he substituted Terry's face with Soldier Sam, a popular action
figure he liked to play with.
It is likely Miguel still knows what Terry looks like, but knows well
enough to stay quiet.