User blog comment:Gcheung28/Help Build a Which Batman Ally Are You? Quiz/@comment-1639863-20140418181524/@comment-1639863-20140418183859

The other answers seem fine. I could see why you would think Nightwing is rebellious, being the first Robin to leave the cave afterall.

However, the way I always think of Nightwing is like the big brother of all the Robins. When Batman's busy brooding and being dark, Nightwing's like the spark of light for the team.