Cutaway gag: Trosky is lying on the ground in a pool of blood with his arm over his torso and legs twisted in a classic Family Guy severely injured pose with a pick coming out of his skull next to Pyotr
Pyotr in Mexico on a landline: Joe, this is Pyotr, I'm done picking my team.
Stalin in his office in a split screen: Pyotr?? Where have you been? That game was in 1928! We are about to be invaded
Pyotr: I picked comrade Trostky! It took me a long time to find him, he was in Mexico! A lot of Mexicans down here...
Stalin: Good, tell him to come back, we can put aside our differences for now, the Fascists are sure to invade us soon, our spies learned of something called "Operation Barbarossa". Why did it take you so long to select a team?
Pyotr: Ooh... Pick as in select. My bad.
He's real in the sense that he exists... in our hearts.
In objective reality, no, it is a made up Slav version of the name Peter Griffin. I am 99.9% sure Grifnovsky is not a real surname.