Is God Formless or With Form?

Why does God look like a lion riding woman with ten arms holding various weapons slaying a buffalo demon on the field of battle? Why does God look like a ash besmeared yogi on the tiger-skin mat telling his beads in the highest reaches of the Himālayas? Why does look like a flute playing mischievous boy who steals the hearts of cowherd-girls? Or does God "look" like anything at all? Some schools of Indian philosophy insist that God is formless and impersonal (Advaita Vedanta, Buddhism etc.) ...