“Emerald Twilight” saw Hal being driven mad with grief after Mongul and Cyborg Superman destroy the hero’s home of Coast City.

Source: https://screenrant.com/scandalous-dc-storylines-heroes-identity-crisis/

One of these threats is the Black Mercy, a deadly flower cultivated by the warlord Mongul.

Source: https://screenrant.com/wonder-woman-powers-justice-league-black-mercy/

This narrative even carves out a space for other cosmic villains like Lobo, Mongul, and Sinestro to join the fray in their own mechs, or as kaiju-riders.

Source: https://www.cbr.com/justice-league-godzilla-pacific-rim-crossover-dc-comics/