Classification: Human ninja
Threat level: Dragon
Age: 18 (Pre timeskip) 21 (Post Timeskip)
Powers and abilities: Superhuman Physical Characteristics, Shapeshifting, Can make clones of himself and gain their experience and knowledge after they are dispersed/destroyed (Can also make clones that explode at his will), Chakra Manipulation (Through which he can walk on any surface and perform various jutsus), Chakra Projection, Fire Manipulation (An elite Katon user), Water Manipulation, Telepathy, Summoning, Precognition (Via the Sharingan's ability to see the image of an attacker’s next move from the slightest muscle tension in their body), Can see through illusions, Illusion Creation, Mind Manipulation, Power Mimicry (Can copy ninjutsu, genjutsu and the fighting style of his opponent), Can make an Etheral Warrior like creature (Susanoo) with his chakra around himself which acts like a barrier and can be used both offensively and defensively, Can block incoming attacks with Yata Mirror or seal opponents using Totsuka Blade
Physical strength: At least city block+ level striking (Should be on par with Hebi Sasuke)
Attack potency/Destructive capacity: At least Multi block+ with katons (A katon from a character with 30% of his chakra was in kiloton range), Town+ with Susanoo (Easily sliced through Orochimaru's snake form. Orochimaru has also outright stated Itachi is stronger than him)
Durability: At least Multi block+, at least Town with Susanoo (Tanked full impact of Kirin while he was considerably weakened)
Intelligence: Genius. One of the greatest geniuses to exist in the prodigious Uchiha clan. Itachi was a natural prodigy in the shinobi arts, praised as the best of his generation. At age 7, Itachi graduated from the Academy at the top of his class; at age 8, he mastered the Sharingan; at age 10, he passed the Chūnin Exams; at age 11, he entered the Anbu; by age 13, he was promoted to Anbu captain. Naturally, he is very observant and analytical. Sarutobi claimed he gained wisdom of a hokage a a mere age of 7. Was able to engineer an entire staged battle with his younger brother to enable him to seal his own eye-techniques in to his sibling and appear to be defeated in the process.
Stamina: Very high. Even on his death bed was able to have a long combat with Sasuke despite of having low chakra reserves comparatively. Used Tsukuyomi, Amaterasu, Susanoo and Spiritual Weapons one after another in his final fight against Sasuke, and implanted a amaterasu in his eye before dying. Much higher in his prime.
Range: Dozens of meters with Katons (A katon fired from a character with 30% of his chakra travelled 40+ meters), higher with Amaterasu and Yasaka Magatama
Weaknesses: Suffered from an unknown deadly disease which weakened him considerably, does not have high reserves of chakra compared to other high-level Shinobi. Using his Mangekyō Sharingan abilities slowly takes away vision of his eyes and is very taxing on his chakra levels.
Standard equipment: Ninja headband, kunai, shuriken, Akatsuki robe and ring