Red Sonja is a she-devil with a a big sword, a high fantasy sorcery heroine created by Robert E. Howard and adapted for comics by Roy Thomas and Barry Windsor-Smith. She first appeared in Conan the Barbarian #23 (Marvel Comics).
Red Sonja has become the archetypical example of the fantasy figure of a fierce and stunningly beautiful female barbarian who typically wears armor resembling a bikini or lingerie.
Ever wonder what you'd do with a girlfriend like this? Probably whatever she says, right?
The character now appears monthly in her own series, as well as a series of mini-series and one-shots, all published by Dynamite Entertainment. The main Red Sonja series features a wide array of cover artists as well as the regular creative team of writer Michael Avon Oeming and artist Mel Rubi.
The original story for Red Sonja, "The Day of the Sword", first appeared in Kull and the Barbarians #3 by Roy Thomas, Doug Moench, and Howard Chaykin, and was later redrawn by Dick Giordano and Terry Austin for The Savage Sword of Conan, issue 78.
In the current Dynamite comic book series, Sonja's origins are portrayed in "flashbacks" within each issue beginning with issue #8. The goddess makes her first appearance in the new series in issue #12, which also marks the return of the deadly sorcerer Kulan Gath.
Later during the series, the original character is killed off in issue #34. Instead, a new character of the same name, described a reincarnation of the original Sonja, takes her place from issue #35 onward.
Thanks to Wikipedia and Bob Howard