“River Run” continues: Swamp Thing arrives in an alternative America-one in which the Nazis won World War II, where he is offered the chance to avenge millions of murdered souls.
In the second story of River Run, Twilight of the Gods, Swamp Thing now enters a world where Nazi Germany has taken over the world, and Alois Hitler is married to Norma Jean Baker. Using Jewish occult magic, Swamp Thing is summoned as a golem by the American President, who wants to use the elemental to wipe out the world in a mass genocide, rather then have a world that was born out of the extinction of over a dozen races carry on. But, Swamp Thing points out that one genocide can't make up for another, so the President destroys Swamp Thing's body. But, he didn't dispose of it properly, and the true spirit of justice carries out said genocide.
Note: This chapter is inspired in the earth-x concept from the pre-crisis multiverse.