I guess you've seen Wheeler's last interview; there is a passage about Summer's casting :
we had been searching and searching for Orwell and just one day in like the casting office I didn't even realize I mean and Summer walked in. And a friend of mine I was working on the show with from Berman, Braun, I mean we were both like, “Summer Glau’s here. What's - Summer Glau is here.” So she was just great. She was fantastic and obviously perfect for the role. We hired her immediately and she will not disappoint.
I think Rollo will be the fan favorite. Okay, so I'm a little biased being only 1' 2" tall.
Lol. I had the same feeling once but that changed when i saw the "Little Helper" video. You can also find me on Twitter, Facebook, Tumblr or Youtube