The only ones I can think of are marowak in red/blue, sir aaron and lucario in the movie Lucario and the Mystery of Mew! But those are the only one's I can think of, r there more pokemon/people who have died in this series?
Chespin is the best thing, since sliced bread. LOL
In the anime all I can think of is Ash dying twice but she's an actor so she always lives in the end. In game there is Gary's rattata/raticate that you brutally murder for your own amusement. I assume legendaries die if you kill them. Also, everyone in the pokemon world dies at the end of each game since no one actually does that and instead enslave the legendary pokemon that keep the world in balance lol
Apparently I'm 66.7% evil and 56.4% Chaotic and I am compelled by greed, hatred, jealousy, and a lust for destruction. Wow, the truth hurts :P