You... you have to see it to get it. He just is cute and cuddly. It's inexplicable. I've read some of the movie back-story-ish stuff... He led a group that helped hold off Megatron until the Allspark thingie could be shot off the planet. He literally stood face to face with Megatron and others just to hold them back.

...

And he's SO DAMN CUTE! He has an expression with shiny sad puppy eyes that could melt Antarctica.

Ahem. No, I haven't seen Mirrormask before. But Stardust... so worth seeing. I'm gonna try to see it again Saturday.