Heartless (ハートレス Hātoresu) is a member of Dealer, and is a representation of the suit of Hearts. Throughout most of the story, she functions as Mr. King's right-hand woman, speaking for him and arranging missions for the Dealer's members. It is revealed, however, that she is really a double agent, working in hopes of finding Kelvin Stelar, father of the main character Geo Stelar.

During the climax, Heartless tries to trap Mr. King in the Noise. However, King became an EM Being and fused with Meteor G. With MegaMan as their only hope, Heartless gives Geo all the information she had, and waits on Earth along with the rest of the cast. Hope Stelar claims that she and Heartless were once friends.


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