Parallax vs Current Thanos
Hal Jordan: large-scale reality alteration
Parallax creature: possession, fear induction
Thanos-Thanos possesses incalculable superhuman power. By far the most powerful of the Titanian Eternals, Thanos is a mutant whose massive heavy-hided body was born with the capacity to synthesize cosmic energy for certain personal uses. (This is a trait that Thanos shares with his father Alars and the Earth-born Eternals but not with Titan-born Eternals). Through still further unknown bionic amplification, Thanos increased his physical strength and resilience to levels possibly rivalling or surpassing even the strongest of the Earth Eternals (Gilgamesh, now deceased). This indicates that Thanos' strength is at least into the Class 100 range, being able to routinely lift well in excess of 900 tons. Through meditation and certain mystical techniques, Thanos augmented his power in still other ways, enabling him to tap, transform, and direct vast quantities of cosmic energy for destructive force. Deadliest of all of Thanos's attributes, perhaps, was his mind, whose superhuman level of intellect was totally dedicated to the annihilation of life. Thanos has also demonstrated psionic abilities, including telepathy, the limits of which remain unknown.
Aside from his great power, Thanos was a superb tactician and was well versed in many areas of arcane lore. Thanos was also a highly formidable hand to hand combatant.