Desak stood up to King Thor and Magni.
Superman is screwed.
This guy siphon off magical and cosmic energies from any god he has killed.
He has warp speed flight, superhuman strenght, durability, reflexes, carries a gladius an axe and shield, and can channel through them, his eyes or his body magical/cosmic energy blasts of incredible power.
King Thor even tried to siphon his life force, and Desak just regenerated, tough that trick really hurted him.