Darkseid is one of the main antagonists of the DC animated universe and a recurring enemy of the Justice League. He is the tyrannical ruler of the planet Apokolips, obsessed with conquering worlds and eliminating free will across the universe. In Justice League, he serves as a powerful cosmic threat whose intelligence, strength, and command over advanced technology make him a formidable foe. Darkseid's presence represents oppression, domination, and the constant danger faced by the heroes.