Also, for the sake of this hypothetical: Everyone involved is in peak shape.
Ideas for participants, but if you think of someone else, feel free: Marx, Engels, Lenin, Stalin, Trotsky, Mao, Fidel, Raul, Che, Sankara, Hugo, Maduro, Evo, Lula, Malcolm X, MLK, Fred Hampton, Bernie, Corbyn, Kropotkin, AOC, Ilhan, Rosa, Fantano, the Chapos, TrueAnon, DeVito, John Brown, Xi, Zizek, Greta, Ho Chi Minh, Woody Guthrie, Rage Against The Machine, etc.
If it were more of hunger games type thing instead of a cage match I'd put all my money on Che.