How incredibly sad , that you keep killing so that others may live , after 800 years the burden must be crippling ! Maxthane’s instincts to seek out Grimm , maybe the ones that save his humanity, but distance him even more from his father! Grimm may help Maxthane find the way that his father has lost. That Grimm could probably just walkout of there , but remains and ‘is not going anywhere’ , speaks of his character. But it also seems that he’s staying for a more defined purpose.