The S.M.A.C. (S.M.A.Q.: Sociedade dos Malvados Antagonistas dos Quadrinhos in the original), in which although the group's name sounds like a kissing onomatopoeia, is the Society of Machiavellian Antagonists of Comics, a evil organization of villains formed by Captain Popsicle against Monica's Gang.
They first appeared in "The Twelve Symbols of Christmas", November 2009.