Thank you for bringing these great characters back to my mind.
Calvin reminds me of Mafalda a beloved Latin American character created by argentinian humorist and artist Quino (a.k.a Joaquín Salvador Lavado Tejón).
She is her own Hobbes sometimes or turns any of the other "normal" kids into him.
I did not remember how clever Calvin is and how much he references pop and high culture. It is a real treat to read all his adventures. Comic strips have the merit and great difficulty of having to paint so much in such a limitted canvas.
Like Mafalda, Calvin becomes the voice of a troubled society subjected to all kinds of arbitrary pressure and looking for an identity outside societal norms without necessarily being evil or hariming others in the process.