What does "PID" mean in Pokemon?

Question

I overheard my friend say something about this. I think he said it was about some hidden value a Pokemon has or something. What does it mean?

Answer 1

PID is basically personality values. It determine things such as:

• Shininess
• IVs
• Gender
• Nature
• Spinda's spots, Unown's letters, Wurmple evolutions
• Pokeathon performance

Source