Jack

Jack (ジャック, Jakku) is the younger brother of Queen Tia who also works for the Dealers. The FM-ian Corvus is, along with Virgo, the most wanted criminal on Planet FM. He also has something of an axe to grind with Omega-Xis. The two can perform Wave Change to form Jack Corvus, a fire-elemental being who can attack from the skies. He enters the story as a new transfer student at Echo Elementary, filling up Pat Sprigs's empty seat in 5-A. He is mostly emotionless around others, his sister being the only one he can open up to, though he does show a highly aggressive side as well. He is in charge of distributing the Noise Cards to corrupt Wizards.

He and his sister are were both orphaned in a war sparked over technological advances. As a consequence, he and his sister wish to use Meteor G's power to destroy the world's technology. He and his sister then enter the Dealers which he was in charge of, to infect various Wizards with Noise Cards.

He enters Geo's school to pose as new student. This is a facade. Over the course of the game he infects Magnes, Bud, Ice and Strong with noise cards. At Alohaha he and his sister reveal their true identities then escape when Joker destroys Luna.

After Queen Tia was caught by WAZA, he kidnapped Luna and threatened to kill her to lure Geo out. But with Rogue and Wolf Woods' help they manage to stop Jack Corvus, Jack's wave change form.

Later when Satella Police manage to reach Mr. King and Heartless, Jack and Queen Tia appear.