Invincible Season 2 - Ep 5 - This Must Come As a Shock (Patreon)

In Invincible season 2, episode 5, titled "This Must Come as a Shock", the Guardians of the Globe (Rex Splode, Dupli-Kate, and Shrinking Rae) go to a nuclear facility to take on the Lizard League, resulting in the deaths of Dupli-Kate and Shrinking Rae.