The 13th reality. Books 3 & 4

Mistress Jane has tapped into the universe's darkest secret to create the Blade of Shattered Hope, and now she is ready to risk billions of lives to set her plan to attain a utopian reality for the future of mankind in motion. When an all-consuming void from the Fourth Dimension opens up, unleashing monsters throughout the Realities, Mister George has one last weapon at his disposal--the mysterious and powerful Karma button, which might be even more dangerous than anyone imagined.