Criminal, soldier; former refugee
Arclight is a mutant possessed of superhuman strength, allowing her to lift approximately 50 tons. She also has superhuman endurance, as well as a great degree of resistance to physical injury. Arclight can also focus seismic energy through her hands to shatter objects, create shockwaves, or cause earth tremors.
Covert ops, above-average hand-to-hand combat
Arclight was once a soldier during the Vietnam War. The experiences there severely traumatized her, and she retains bitter memories of that place. She used her rage to fuel her body building, which she further uses to augment her mutant abilities (her mutant ability enables her to create shockwaves through physical contact, usually combined with her super strength in form of punches).
At one point, she became a member of the Marauders (a team of superhuman assassins brought together by the mutant thief Gambit when he was in the employ of the enigmatic Mister Sinister). On Sinister's orders, the Marauders massacred the underground community of mutants known as the Morlocks. In the course of the massacre, the Marauders, including Arclight, clashed with various superhumans, including the X-Men. (To learn about the teams, characters, and people above, just click on their highlighted names. Note: Beware of the woman in a tight-fitting/revealing outfit in the background of the Marauders' bio page.)
Arclight, along with the Marauders, originally died during the demonic invasion of Manhattan that came to be known as the "Inferno." However, Mister Sinister had the technology to clone the Marauders (thanks to him retaining samples of their DNA). Thus, Arclight continued to appear among the Marauders in all subsequent activities, including their battles with Cable and X-Man. Therefore, it's unclear if the current Arclight is the original or a clone. (If you would like to learn more about the character, team, or event above, just click on their names.)
For a brief time, in an alternate time line, Arclight served as a member of the Femizons. This group was an all-female superhuman army of warrior women. During this time, Arclight clashed with the super-soldier Captain America, and the mercenary named Paladin. (To learn about the group and characters above, click on their highlighted names. Note: Beware of the multiple women in tight-fitting and/or revealing outfits in the main picture on the Femizons' bio page.)
In an alternate universe, Arclight has been portrayed as a male instead of a female. (This can be seen in the last picture posted above.) Marvel has sometimes done this with other characters as well. Some that I have seen are Black Panther and Loki. (To learn about these characters, click on their names above. Note: Beware of Loki's bio page; the main picture is of the female Loki in a revealing outfit.)
To learn a little bit more about Arclight, click on the following link, http://marvel.com/universe/Arclight. (Note: Beware of Arclight's bio page's main picture; she has a form-fitting outfit on.)