This dean winchester foto might contain
piel, tono de piel, color carne, desnudez parcial, desnudez implícita, skintone, color desnudo, nude color, and parcial desnudez.
The torment that Dean endured in Hell (and 4 months is like 40 years there) changed him. At first everyone's happy to see Dean but it becomes obvious quickly that he's spiraling out of control. Dean had become the main villain of season 4.