Fire Exhalation

Chris Bowman (Heroes)
Chris has the ability to breathe fire. He has demonstrated this by preventing Rachel Mills from catching Wildman, and in an alternate path in chapter 4 of Faction Zero, in which he blew up Rachel's car.

Chris often uses his ability as part of his carnival act, as seen in Strange Attractors and Slow Burn, Part 10. He is also capable of fire breathing through the conventional method, with a fire-eating wand.

Chris has also shown that he can hold a fireball in his hands, though it remains unclear exactly how this was accomplished. While kissing Gail, both she and Chris let out a puff of smoke. Whether this was a result of Chris's fire breathing or Gail's fire breathing is unknown. Chris told Amanda Strazzulla that his ability first manifested when he was fifteen, at a point of heightened tension. He expected to let out a breath of air but, instead, fire came out.

Gail Bowman (Heroes)
Gail has the ability to breathe fire. Rachel Mills witnesses this when Gail shoots fire into the air at a carnival. Gail is also able to shoot fire balls from her mouth.

Jennie Bowman (Heroes)
Jennie has the ability to breathe fire. When she demonstrates this ability, she seems to not be very experienced at controlling it or creating large flames. Once she let out a puff of smoke when hiccuping and another time she concentrated very hard to create "a little tongue of fire" while coughing. In Slow Burn, Jennie seems to have much more control over her ability, being able to breathe fire after she concentrates.