Thanos x Darkseid + Story

Dark Titan's Origins by MoonKnightFan101:
Thanax, the Dark Titan, was the firstborn of Yuga Lars (Yuga Khan+A'lars) and Heg-Gra (Heggra+Sui-San) on the planet New Titan. Born with skin of stone and the eyes of evil, Thanax induced great amount of terror in those unlucky who gazed into his eyes. His mother, Heg-Gra, went insane after birthing the young Titan and attempted to murder him, but failed. Thanax was exceptionally smart in his youth, so much so that he started skipping school because everything they taught him, he already knew. At the age of 12 Thanax met a young girl named Antithetis, who, at the time, was an Anti-life entity disguised as a mortal. Antithetis taught Thanax about agony, torture and subjection of the living and sentient life, to which Thanax strangely took joy in. Thanax soon fell in love with Anthithesis and tried to do everything in his power to gain her trust and love, but she was never interested. Several years later Thanax grew into a cosmic threat in search of obtaining the Omega Stones, just so he can subjugate all life in the Universe, in an effort to impress the Antithesis.

Both characters belong to Marvel and DC respectively.