Arthur Fleck - The Joker

Arthur Fleck was a mentally unstable failed comedian, who was frequently mistreated by his peers. Due to this, he gradually transformed into the psychotic anarchist known as The Joker, whose crimes inspired a chaotic revolution across Gotham.

Strength

• Cracks telephone booth glass with a headbutt (source)
• Breaks a punch clock off its hinges with a few hits (source)
• Chokes Alfred through a metal gate (source)

Speed/Skill

• Outruns 2 police officers (source)
• Kills a man larger than him with a pair of scissors (source)
• Seemingly bloodily killed a psychiatrist while unarmed and handcuffed, and then outruns a guard (source)

Durability/Endurance

• Withstood a wooden signboard getting broken over his head and a gang beating (source)
• Gets back up after a beating from 3 guys (source)
• Gets punched in the face by Thomas Wayne (source)
• Tanks getting hit by a taxi and cracking its windshield (source)
• Survives being inside a police car that was totaled by an ambulance crash, and quickly recovers (source)

Marksmanship

• Shoots two guys from a close-range (source)
• Shoots a guy in the leg from a distance (source)
• Shoots a guy several times (source)
• Shoots Murray in the face (source)

Intelligence/Quick-thinking

• Quickly comes up with an excuse for his boss, but he doesn’t believe it (source)
• Was able to sneak into an exclusive theater by disguising himself as an employee (source)
• Bangs his head as a distraction in order to steal a file (source)
• Causes a riot on a train without being seen and hides successfully from two cops (source)