Ohhh so the helmet of Mambrino allows Bloodfiends to break the "filial piety" taboo freely
In Manager of La Manchaland world, Father Quixote allows for his children to kill him. The tipping point being Sancho herself pleading that he let himself get impaled and not seal them, if he ever cared for the family
... Damn

Also did we ever get any clarifications on how Father Quixote's power of creation resembled P corp's singularity?