thomas and friends mini series

who or what is diana from?

if anyone was curious, this years batman diesel is different to last years, preserving the exclusivity of the dark knight release. since ive only seen the pic jdog was kind enough to share, whether superman is the same or not, i dont know. likely will be though.

So, there's going to be another Comic-Con Batman Diesel?! I have another chance?! (Even if it is slightly different, I still want myself a Batman Diesel.)