Villains, Eating Dead Parents

When Lex Luther in his villain interview proposes that they should feed a burger made of Batman's dead parents to Batman to make him cry and run away the other villains are horrified and disgusted, with even The Joker disapproving of it by outright saying that doing that is a little too far even for him and Killer Croc also bluntly telling him to get out.

Example of:
Even Evil Has Standards