Dennis is a Swedish horror game developer that made the Granny and Slendrina series. The granny and Slendrina series are directly connected and also are connected to the Slenderman online mythos. Dennis goes by DVloper because he is a Developer and his initials are DV. In the granny games there are many connections and easter eggs back to the Slendrina series, such as items, and even characters being hidden easter eggs, and even some characters from the slendrina series are direct ingame. 