Fizzy, also known as Fiznik[1], is a yeti who resides in the Frostfest Mountains. He has apparently known Sharpfin prior to the story events of Skylanders: Swap Force.
Story
Fizzy has served as the Head Greeter for years on the Frostfest Mountains. It is his job to direct any visitors to the year round festivities in town and make sure they have a steaming mug of triple-chocolate cocoa to keep them warm and cheery.[1]
Fizzy first appeared to Flynn and Sharpfin when they arrived in the mountains to look for the Ancient Frosthound. He soon explained that the way to the Frosthound was crawling with danger recently when the village lanterns went out.
Other appearances
Skylanders: Lost Islands
Fizzy, referred to as Fiznik here, is an unlockable companion in Skylanders: Lost Islands. Upon being unlocked, he doubles the amount of Kingdom XP the player earns.