Sophie and Lucas are a very good example of that old rule "opposites attract." I almost drew him playing a video game, but even a video game seemed too stimulating for Lucas's tranquil lifestyle. A book really is dull from Sophie's point of view, even if he's reading it to her--and hey, it could be homework he has to do, which is even worse. Sophie wants to run around and go wild.
The batman doll Sophie has is based directly off a Batman doll my sister bought at Target recently that I'm obsessed with, he's just a couple of sizes bigger in the drawing. [link]
Who knew it was conceivably possible for Batman to be THAT freaking cute? Now the drawing is officially about Batman.