I'm against giving ordinary enemies emotions. It makes it harder to kill them. However I do think it's a good idea to show examples of friendly NPC's of a typically hostile species. However I think it's a good idea to give the enemies a motive. For example in TP the Bulbins were only working with Ganondorf becuase they "Follow the strongest" meaning the have a need for leadership and protection.

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Formerly Ritogirl

Pokemon games= For everyone
Pokemon Anime=For children
Pokemon manga= For Teens
Pokemon= For me