When I saw that notification for the Scribblenauts contest, I started drawing immediately and didn't stop until I was finished! What are the odds, too: I finally caught up with Young Justice yesterday. Anyway, I was going to draw just the Robins, but I like Cass too, and I figured I might as well make the numbers even. Man, I hope multiple characters are allowed.
From left to right (I can never remember the number of Batgirls):
Stephanie Brown (Robin IV/Spoiler/Batgirl)
Jason Todd (Robin II/Red Hood)
Dick Grayson (Robin I/Nightwing)
Bruce Wayne (Batman)
Tim Drake (Robin III/Red Robin)
Damian Wayne (Robin V)
Cassandra Cain (Batgirl)
All the characters belong to DC, Scribblenauts belongs to 5th Cell and WB Games. All of the characters have appeared in some issue of Batman.