Bronzonger slays Giratina

Bronzonger is a Bronzor in Platinum.  It was put on the team because they wanted a psychic/steel type.   It has been confirmed to have Pokerus.  He later gave Pokerus to the rest of the team.  It is now called Steve or Captain Bronzor.  He has now evolved into a Bronzong.  He was the one who defeated Giratina.