What are you favourite pokèmon designs? explain your choices and discuss.

I'll start with Ho-oh. IMHO one of the coolest pokèmon.

Great character design, the theme of the phoenix is perfectly represented without ruining the typical first and second gen pokèmon style. Colors merge together erfectly giving the idea of the "rainbow bird". The choice of not making iit actually rainbowish has been a good choice IMHO.
Also the fact that he created the three legendary dogs makes him even cooler