Widow

Natasha Romanoff

Artificially Enhanced Physiology: Natasha has received the Red Room's variant of the Super-Soldier Serum. As a result, many of her body's physical capabilities have been heightened to the peak of human ability. These physical attributes are further heightened when bonded to the Widow Symbiote.
Superhuman Strength
Superhuman Durability
Superhuman Stamina
Accelerated Healing Factor
Wall-Crawling
ESP (Spider-Sense)
Immunity to Spider-Man's Spider Sense
Webbing Generation
Camouflage Capabilities
Constituent-Matter Generation
Flight: Widow is capable of manipulating her biomass to form wings.

Master Martial Artist: Natasha is an expert in the field of martial arts. She has mastered karate, judo, aikido, savate, boxing, and multiple styles of kung fu.
Expert Acrobat: She is an Olympic class athlete, gymnast, acrobat, and aerialist capable of many difficult feats.
Expert Marksman: Natasha is a very accurate marksman skilled in sharpshooting and knife throwing.
Multilingual: She is fluent in Russian, English, French, German, Chinese, and various other languages.
Graceful Dancer: Natasha is a profound ballet dancer.
Expert Tactician: She is a very effective strategist, tactician, and field commander. She has lead the Avengers and even SHIELD on one occasion.
Talented Hacker: Natasha can hack into most computer systems without tripping any firewalls or security.
Master Seductress: She is an expert in the field of seduction. Natasha has been infamously known to bend many different men to her will and sometimes even get them to do her bidding for her.
Expert Spy: Natasha is a dangerous secret agent trained in espionage, stealth, disguise, infiltration, and demolitions. Her talents and years of experience have enabled her to reach a high ranking as an agent of SHIELD.

Heat and Sonics: Like most symbiotes, Widow is vulnerable to intense heat and sonic vibrations.