Someway, we have many examples of morphing in licterature (strating from Iliade - I don't know the english name- and Odissey untill my co-citizen Ludovico Ariosto). In painture maybe I could name Jeronimus Bosch, but I agree with Jayjay that our common and most direct father is Dalì. On the other hand, as well as mediteranean surrelism - so Dalì- is our point of referrement for the paints, I'd like also to name norther-europe surrealism artists, and Magritte overall, as our conceptual fathers: in Magritte's art surrealism is the union of two (or more) real things which, once they are united, form something that's evidently not real but neither unreal. It is surreal, that means over the reality, it leads you to a upper level of reality. In Dalì's art surrealism is more the world of dreams, something which is sureley more "unreal". So we come, in my opinion, from both of these artists: from Magritte because we start from two "real" things - a girl's body on a side and tits on the other side - making a surreal thing - a girl with impossible tits. But you know, as in Dalì...they are our dreams.
Ah, I add Man Ray too!
Blax12