Nicholas Rumble is the son of Crystal Diamond and another wizard who died protecting Elemente. Nicholas is part of the Heroes of Magic, a group of skilled wizarding teenagers that is able to fight off Lord Jasalsaini.
Nicholas Rumble is quite smart and skilled in magic, in the 4 heroes of Magic, with the knowledge of the arts of Dark Arts, Earth Magic and Mineral Magic. The Leader of Dark Arts and The Leader of Earth and Mineral personally taught him, due to his natural balance between all 3 elements. No spell was difficult for Nicholas to master.
He is responsible for sealing magic in the heroes of magic, along with May Beaulieu, another hero of magic that is also capable of sealings and attacks,
Nicholas being a Dark wizard also is in charge of identifying the Dark Arts used by Lord Jasalsaini, the one who brought the heaviest impact onto Lord Jasalsaini's plans.
Nicholas is the youngest of the 4 heroes of Magic.