General Idea/Mysterious character/SUPERUSER23

Idea
A random character (South Korea........Serbia) be that is called mysterious character, but his Unlock Requirements (expent the normal Unlock Requirement) will be a new general idea

Info
Every game-mode (survival, league, tournament, Arcade and Head Cup),after 30 seconds a piece of a puzzle will appear you need jump and catch it, you get 1 of the 20 puzzle pieces, and when you get all 20 you unlock him (CAUTION) If you delay 6 seconds without getting the piece, the puzzle piece disappears.

Good luck!!!