GoGo Monster bears a number of resemblances to Matsumoto's other, more well-known (at least in the U.S.) work, Tekkonkinkreet. Both, for example, feature two young boys as protagonists, one of whom is in touch with more primal, perhaps supernatural forces and possibly even in need of "saving." Both feature a wise elderly man who serves as guardian for the pair. Both feature enigmatic narratives that tease at meaning. And both trade highly in allegory, with readers being able to draw all sorts of thematic possibilities from the elliptical roles the various character serve.