As Rick vows to give up science, they prepare to go for ice cream when Diane was killed by a bomb sent through a portal created by another Rick as revenge for the main Rick refusing to join the council. Rick then decides to become a scientist again to avenge his family. As this origin story is revealed to be a fabrication to trap a Galactic Federation agent, it is unknown if Diane is actually still alive, or if she existed in the form shown in Rick's memories.