User blog comment:Thailog/Ep. 201 "Happy New Year!" discussion/@comment-68.81.5.150-20120429034334/@comment-2052980-20120429041658

Yes. Nightwing quiting as Robin, however, does not mean that there were not 2 Robins at one point. Maybe they overlapped. I think a second Robin (Todd) may have inspired Dick to become Nightwing. Then the loss of Todd inspired Drake to become the third Robin.