Haha you did a great job with this!! It's hilarious!
It looks like some of the Pokemon, namely Staraptor, Luxray, and Skunktank, were designed to cater to "scene" or "emo" kids. Sorry if this has been mentioned, I didn't read all the comments =] I mean, the fugly hair across the face on Staraptor and Skunktank and the hair and misproportioned body of Luxray. I think you've pretty much hit the nail on the head Glitter Stain!
Probopass is definitely handsomely fugly. The awesomely big nose and moustache. And it's name has probe in it. Probopass rocks haha. Lucario is extremely fugly, were they trying to make him look like a bandit or something? I remember seeing Brock holding a Happiny in a picture once, and I couldn't stop thinking of how horribly cutely fugly it was. Ugh. Happiny and Bonsly. FUGLY. Are it and Happiny supposed to be wearing diapers? That just makes it worse.
Ah, and your number one, Chimchar. You're absolutely perfect on that one. Everything about it is bad. And if I may add one, I think Dragonite is quite fugly haha, even though I'm sure most people would disagree. And I think most of the first gen Pokemon look awesome.