Question: how to change your pokemon's nickname in platinum?
Answer: You can re-name it when you catch it i think. But yeah if you've already caught it you have to go to the name rater in. Eterna. User Info: wackyworld. wackyworld - 11 years ago 1 1. Eterna city. It's a apartment building. Go inside and you will find a old man in the first floor. Talk to him. User Info: Lucario1545.