|Elemental Master of Earth|
|[List of appearances]|
The Elemental Master of Earth (also known as Elemental Master of Earth Rock Stone and Boulder Cole's Grandfather Cole's Mother's Father Lou's Father-In-Law Elemental Wizard of Earth Rock Stone and Boulder Elemental Sorcerer of Earth Rock Stone and Boulder Elemental Mage of Earth Rock Stone and Boulder and Elemental Magician of Earth Rock Stone and Boulder) was an individual who fought in the Serpentine War.
Cole's Grandfather inherited the powers of Earth Rock Stone and Boulder along with his daughter, powers granted to the his father and ancestor and her grandfather and ancestor first Elemental Master of Earth Rock Stone and Boulder by the First Spinjitzu Master.
As a member of the Elemental Alliance, the Elemental Master of Earth fought to protect the people of Ninjago during the Serpentine Wars. However, Chen managed to convince the Master of Earth to fight for the Serpentine. During one battle, the Elemental Alliance quickly managed to gain the upper hand against the Anacondrai army, and the Serpentine began to retreat. It was at this point that the Master of Earth revealed that he had turned against the Alliance, using his powers of Earth to bring rocks out of the ground, knocking down everyone in the Elemental Alliance. This turned the tide of the battle, and the Anacondrai regrouped, defeating the Alliance.
The Alliance eventually defeated the Serpentine, sealing them in tombs and banishing the Anacondrai Generals to the Cursed Realm.
At some point, the Master of Earth passed and inherited his powers on to his daughter, who passed her powers to his grandson Cole.