Fiery Redhead / Comic Books
: X-Men Jean Grey and Rachel Grey Summers, who not only fit the personality trope, but also happen to manifest their powers in the form of giant birds made of fire. However, Jean often subverts the trope, especially in her pre-Phoenix days, when she was one of the most level-headed Marvel superheroines with a personality very reminiscent of the Fantastic Four's team mommy Sue Storm Richards. Rachel on the other hand has always been fiery, before during and after her own Phoenix days.
Rahne Sinclair of The New Mutants (Excalibur, X-Force, X-Factor, New X-Men...) is at once shy, passionate, religious, conflicted, and a redhead. Her fiery personality is hidden under repressive piety most of the time.
Irish beauty Theresa Rourke Cassidy (X-Force, X-Factor). You don't want her screaming at you.
Ember of .
ElfQuest Also from Elf Quest: Redlance is an inversion because he's usually very quiet and shy. Although not when it comes to sex, according to the novelization.
character Maxima, who is definitely not a hero, but a spitfire. She is redheaded royal with superpowers.
Superman Red Sonja.
The Warlord Ember ◊ from the Dutch comic 'Storm'. Her Dutch name is Roodhaar, which translates to Redhair.
Mary Jane Watson from . Right from her very first appearance she stood out from the rest of the supporting cast due to her lively personality.
Spider-Man Natasha Romanov, the Black Widow. Started out with black hair and was only " revealed" as actually a redhead in her ASM #86 makeover. Did not become appreciably fierier after the change.
Medusa of The Inhumans
: Frankie Raye, who went on to become a Fantastic Four Fiery Redhead.
Patsy Walker, Hellcat, formerly married to matching Fiery Redhead Daimon "Son of Satan/Hellstorm" Hellstrom.
Chili Storm, the friendly nemesis of .
Millie the Model Shanna the She-Devil, when her hair is properly colored.
Babs Gordon, in the current continuity (originally, she was a Brainy Brunette; Batgirl's red hair was a wig attached to the cowl).
has all the trappings of one...as a 10-year-old girl.
Little Orphan Annie : Hortense McDuck.
The Life and Times of Scrooge McDuck Blackhawk's Chuck is a male example.
Guardians of the Galaxy: Nikki.
The titular character of Brenda Starr: Reporter.
Banshee and his daughter, Siryn. Irish.
Dum-Dum Dugan. Irish-American.
Dark Action Girl Ansea Latal from .
Le Scorpion Sophie Otterloop from .
Cul de Sac .
Chassis Mera, wife of .
Aquaman Wally West, the first Kid Flash and third Flash, is quite impulsive, though less so after some Character Development. This contrasts him with his slow-thinking mentor Barry Allen, the second Flash.
Erin Mc Killen, Irish mobster who scarred Harvey Dent in the New 52. Would also qualify as an Evil Redhead.
Lady Rawhide, even if it is a dye job in her case. Anita even notes how her personality seems to change when she is in her Lady Rawhide disguise.
Marine Sergeant Rachel Cole-Alves from . Took on the Punisher in a fist fight, it doesn't get more fiery than that.
The Punisher Dr. Caitlin Fairchild. Aka, "Red".
Guy Gardner. Described by Nash as "Loud, and angry, and obnoxious, and ginger!"
Angela is a redheaded Asgardian warrior and as fiery and boisterous as most other Asgardians.
Starfire is fierce in combat, and not only is she a redhead, but also her hairstyle makes it look like flames, which causes a literal version of the trope.