Are there two robins in Batman?

There is Batman and Robin (not Batman and two robins).

____

There are 3 different Robins. However, only one ever wears the suit at any time.

Dick Grayson, the first Robin, left Batman and later became Nightwing.

Jason Todd, Robin #2, died.

Tim Drake, the final Robin, was driven insane by the Joker.

Stephanie Brown and Damian Wayne also are Robin at some points.