mmm I would say I like many many Pokemon, but my favourite one has always been Mewtwo, even more than Lugia (even if Lugia is hyper cool too!).
Though, in Pokemon ruby a pokemon a bit surprised me... Its ABSOL of course! ;P
U know, he was hyper tough, won many beautiful comps and kicked pokemon that were higher in level than him!!!! he was hyper!!!
So I would say my favourite ones r Mewtwo and Absol. (although I have many many more XD)
Omg btw toothache, I use to have a L100 Houndoom!!! omg he was hyper tough too!!!! i luv houndoom!! but then (as i said many times) they stole my pokemon gold and all those precious pokemon are gone :'( *cries*