They are hidden in the chapters.Also if you want to get the upgrade you need more happy gold.
get the adventure pack for him
You can only get it on his special level which comes with his character pack
When you get the cannon part of chapter 8 there is a platform behind you. Bring in your giant and lift the statue of kaos and use the portal.
GET soul gem and unlock the soul gems upgrade
you find sunburns soul gem in his adventure packs level
Darklight krypt is where you find sunburns soul gem
Whirlwind's soul gem is on Chapter 17, Creepy Citadel. After the little goblin puzzle, there is a platform with two Gargantulas. Defeat them to open the gate and get the soul gem. Hope this helped.
Sorry I don't know but I know where Sunburns soul gem is it is in Dragon's Peak about 5 minutes into it lean of the island and there is a dragon waiting there to take u to his soul gem
The highest level that a Skylander can reach is Lv.10. Fortunately, if you want to keep training your Skylander after it reaches the maximum level, you can reset its stats and start at level one. WARNING: WHEN YOU RESET YOUR SKYLANDER'S STATS, YOU ALSO RESET ITS UPGRADES, SO THEY WILL BE DELETED! Reset their stats on your own risk...
you find the soul gem in darkwater cove but i dont know the exact place in the level
its on oilspill island
chapter 11