Introducing the NEW MrBeast Lab Mutators - Iconic Panther. The MrBeast Lab Iconic Panther Mutator is 5.5" (13cm) tall. Perform the experiment to witness an EPIC reveal of the MrBeast Lab Iconic Panther. The MrBeast Lab Iconic Panther figure has over 20 points of articulation. There are 4 MrBeast Lab Mutators to collect. These include: the Iconic Panther, the Golden Panther, the Stealth Panther and the Metallic Panther.