Well , looking upon kardecist theories , i ' d say that , assuming that cavemen are all dead for over 10 k years now , and even the most distressed ghosts are not usually haunting their dying place for more than , let ' s say , 300 years , it ' d be nearly impossible to ever find a caveman ' s ghost . Animals are even worse in that matter . Dogs , cats and some other smarter animals could ocasionally feel some sort of attachment to people or places , but i don ' t think that would be the case with adinosaur , let alone the fact they ' re all dead for nearly 70 million years now . <| sep |> Ivy doesn ' t want money as far as I know that character has seen all sorts of changes and I ' m not up to date . Scarecrow and Riddler also don ' t seem to care for money . I don ' t know where Hatter falls . Also while R ' as certainly makes a lot of money his schemes tend to be grander than that and go beyond making cash grabs .