Skull pixie

Dunno if this is the right place, but I’m wondering if you can find skull pixies in the normal online missions without using one of them silver keys, cheers

Yup when you beat the dungeon in the lost area of chapter 4

Chapter 3 Shadow Valley Dungeon: May appear in wild battles for you to catch.

Chapter 4 Hidden Temple Dungeon: May drop after beating the boss battle. 

Thank you guys