 Much like Calvin, Susie has a mischievous (and sometimes aggressive) streak as well, which the reader witnesses whenever she subverts Calvin's attempts to cheat on school tests by feeding him incorrect answers, or whenever she fights back after Calvin attacks her with snowballs or water balloons.Hobbes often openly expresses romantic feelings for Susie, to Calvin's disgust.In contrast, Calvin started a club (of which he and Hobbes are the only members) that he calls G.R.O.S.S.