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Official Site: Marvel Comics

Spitfire (Lady Jacqueline Falsworth Crichton) is a fictional character, a superhero in the Marvel Comics universe and was introduced as a member of the World War II era Invaders superhero team.

Spitfire first appeared in Invaders #12 (December, 1976) and was created by Roy Thomas and Frank Robbins.

Jacqueline "Jackie" Falsworth was born in Maidstone, England, and is the daughter of the original Union Jack (and the sister of Union Jack II). As a teenager during World War II, she met the superhuman team the Invaders. Baron Blood attacked her, and the original Human Torch rescued her. She was revealed to have been bitten by Baron Blood, who abducted her again; this time she was rescued by Captain America. She received a transfusion of artificial blood from the Human Torch, which endowed her with superhuman speed. She used these new powers to save the Torch from the Blue Bullet. She became an adventurer and took the name Spitfire and joined the Invaders, and went on her first mission with the Invaders. She operated as a special agent for the United Kingdom and Allied Forces during World War II, as well as the United Kingdom's Home Guard.

With the Invaders, she parachuted into Nazi Germany. She was captured by the Nazis, and was about to be executed when she was rescued by Union Jack. She battled Warrior Woman, and escaped from Germany with the Invaders. With the Invaders, she fought the Teutonic Knight, and helped prevent the assassination of Winston Churchill by Baron Von Strucker. Alongside the Invaders, she clashed with Master Man, and freed the Mighty Destroyer from captivity. After some time off, she returned to active duty with the Invaders.

Spitfire has not been a contender in any CBUB matches.