Kutie Pie
"It is my destiny."
Ehh, it's hard to say what NPCs are my favorites. But I suppose I'll go with the Engrish Rocket Grunt from G/S/C who didn't realize Team Rocket disbanded (I don't think he has a name now that we know he lives in Unova). He was interesting.
There was also the one who went "hyuck hyuck hyuck".
There was also the one who went "hyuck hyuck hyuck".