To unlock the Rockstar you need to perform round about 10 tricks with Raging Queen Board (buy it for 50 in game bucks)
For more Unlocks check our Homepage: http://www.bitstern.com/skatelander-secret-characters-unlock.html
We show the gameplay of this mystery character with. This game is called Skatelander by UnderDOGS gaming. Toucharcade described it as Crossy Road meets Skateboarding.