Jafrost

Jafrost is an Ice element Pico Pet. It first appears as the boss of Challenge Tower level 15. However, it can be purchased using real money at any point in the in game shop. In Pico Pets Puzzle, it has the Pummel ability. It is the legendary pet of the Ice element.

in Pico Pets
The most chilled out Pico Pet, it also has the chillest (and strongest) special attack.

in Pico Pets Puzzle
The most chilled out Pico Pet, a legendary ice element 

Levels found in

 * Snowy Mountain: 10
 * Challenge Tower: 15

Name origin
"Jafrost" is derived from "Jackie" and "frost". It is named after Jackie Jackson. It may also be a play on "Jack Frost".

Trivia

 * Jafrost is the only legendary whose eyes are not visible.
 * Jafrost is the last pet to be encountered in the entire game.