The Patriotic Robot is a secret Legendary pet in Bubble Gum Simulator. It was obtained by opening a July 4th Egg. The chance of hatching it was 1 in 7 million (0.0000142%), or 1 in 3.5 million (0.0000284%) with the Lucky Chances gamepass.
This was one of the most powerful pets in the game. However, it has been overpowered by many of the secret pets that were added in later updates.