Board Thread:Questions and Answers/@comment-11255996-20130712192018/@comment-5313287-20131003012107

Ok the answer is 4 Robins post-new 52:


 * 1: Dick Grayson
 * 2: Jason Todd
 * 3: Damian Wayne
 * 4: Helena Wayne (Earth 2)

Note: It has been stated that Tim Drake was never Robin, but Red Robin