Pokémon Investigative Organisation

Based off an old, dead RP from another site. In a world where Pokémon that can walk and talk with no signs of human life anywhere, there exists a group that protects the world from the evil Society of the Evening Star. Led by Commander Lucario, it's the Pokémon Investigative Organisation. The only perplexing issue is, the leader of the Society is...Lucario's brother?