After the attack, Jack and Drake discovered that the Serpent Society had infiltrated their hometown and they had attempted to contact the local authorities.

Jack, unhappy with this information, began training in martial arts and weight lifting so that he could fight the Serpent Society on his own.

Before returning the painting to King Cobra, Flag contacted Captain America's hotline and informed them that the Serpent Society was in Sandhaven.

When Captain America believed he was dying, he charged Jack Flag, Free Spirit, Fabian Stankowicz and Zach Moonhunter with maintaining his hotline.

[3] During the Civil War storyline, Jack Flag is shown to be living a civilian life with his girlfriend Lucy in Cleveland, Ohio, but refuses to either register or throw out his suit and weapons on the basis of the Superhuman Registration Act being "un-American".

Growing frustrated with the police's slow response and lack of action about crime in his area, he intervenes in disguise as Jack Flag when a woman is attacked outside of his apartment building.

[10] During the War of Kings storyline, one of many alternate future iterations of the 31st Century Guardian, Starhawk, kidnaps Jack Flag, Starlord, Bug, Mantis, and Cosmo.

The tear was created as a result of Black Bolt of the Inhuman-led Kree Empire having detonated a bomb so powerful it ruptured the Dark Matter holding the universe together.

With Peter Quill, via the use of a Ba enslaved Celestial and the telepathic dog Cosmo, Warlock manages to stop the growth of the Fault.

The tear remains, opening a door for greater perils: Warlock has become his evil self, The Magus, as a result of his saving the universe from destruction via the Fault's expansion, Star-Lord becomes geriatric, Mantis an infant, Bug an adolescent, Cosmo a puppy, and Jack Flag seem intangible.

Jack Flag makes a brief cameo appearance in Marvel's Guardians of the Galaxy as an inmate at the Nova Corps prison "The Rock", which was overtaken by the Universal Church of Truth.