<p>Here is the Clarence theory, in the last episode of over the garden wall you see the town Wirt, Greg and others live in. You see this town again numerous times in another Cartoon Network show Clarence. So is is saying that Clarence and Wirt and Greg live in the same city. Another thing backing my theory up I just saw a video of Wirt in Greg making a cameo in Clarence it is in the episode lil buddy, Clarence is in the forest and you can see shadows of what appear to be Wirt and Greg. What do you think? </p>