Of course we know that in certain situation Pinkie can snap, lose all her positive energy and just deflate becoming sad, angry and more than a little crazy, but do the other three have similar situations? And will they flip to a more high energy Pinkie like state? Or would it depend on which one? Perhaps Maud and Limestone flip with Marble becoming more Pinkie like? Somehow neither of the two lesser known sisters adopting Maud's stoicism seems quite appropriate.

Any opinions?