TMS part 90: Mecha Sally reveals an (very) unlikely son to a (even more) unlikely father

So the girls are looking for Mecha Sally and when they do. Mecha Sally then tells them something about Bender.

She reveals Bender's father is The Joker, she states that MOM and Joker had plans to conquer the multiuniverse with a massive robot army created by MOM, Joker made Bender his masterpiece and leader of the robot army, when he refused. Joker disowned Bender, tried to kill him and then lied to him by saying that he was the most defective piece of metal ever made and that it was a travesity that MOM and him choose him to be the leader when he's filth compared to the rest, thus giving Bender mental problems screwing him up for years until he found peace with Marceline (his oldest and one of his dearest friends). Neither of them knew who the other was until the event mentioned by her and Bender in The Great Time Travel Adventure.

Then Mecha Sally decides to end them before they can tell Bender or Eddy by mutating into a monster like creature