A single death is a tragedy. A million deaths is a statistic.
—Joseph Stalin as he plays Pikmin
Joseph Stalin (born Ivo Robotnik Sr.) was the founder and first emperor of all of (Soviet) Russia, and he is secretly Dr. Ivo Robotnik's true father. He was raised in Soviet Russia and died in Soviet Russia.
Stalin is neutral. He doesn't care who wins: Megatron or Optimus Prime, Bowser or Mario, Thanos or Billy Mays, Peppino or Noise. (though he did play Thannos in the Asgardian Empire's reproduction of the events of the Unfinity War).
History
Stalin was born in Georiga, as Ivo Fyodorovich Robotnik, to Dolly Parton after a fling with traveling salesman Fyodor "Theodore Roosevelt" Robotnik. Not wanting to look after the child, she fled to Italy, and young Stalin was banished to Russia with his father by the omniscient Washingmachine EX.
In Russia he was inspired by the Tsar to take power for himself, so stole Communism, pulled out his AK-47, and painted Russia red (the AK-47 actually had nothing to do with this).
Stalin came out as gay in 1939 shortly after signing the Molotov-Ribbentrop Pact with Hitler. He only signed the pact because of his crush on Hitler. Hitler then rejected Stalin, breaking his heart. Hitler actually had feelings for Kurt Schuschnigg. One term of the pact was that these relations would not be shared with the public. This information was shared with the world in 1982. Erotic fiction written by Stalin about Hitler was uncovered the following year.
He was succeeded by Dr. Ivo Robotnik, the current leader of Soviet Russia.
National Anthem of USSR
His official theme, which is also the anthem for his country.