Nice to see Caterpie again, I suppose.
Nice how the doctor kept saying something like "...or so they say." at the end of many sentences. Gives him more character.
They said in the episode that Caterpie didn't want to cause much destruction to the city so it went to that tower before it evolved. Actually, staying in the forest sounds like a better idea to me. Besides, I was thinking it went to that huge tower to evolve because it wanted something proportionally bigger than a tree.
Also, Metapod evolved
really fast. I knew it would happen, but c'mon... Sure, Metapod evolve fast, but not in half an hour or whatever that was, right? They kinda throw Ash's Metapod's quick evolution in our face by doing this. I hope it had something to do with those crazy steroid-like vitamins it had eaten.
Anyway, nice to see Dustox. It had lots of good airtime this episode.
Yeah. 7/10.