Integra Martel is a character from the anime Solty Rei. She has purple eyes and black hair that reaches her chest, and her apparent age is that of a youth.

Integra holds the position of leader of the Proceed unit, which is part of the R.U.C. Security Section 7. Her teammates in this special duties section include Silvia Ban, Celica Yayoi, and Axela Warrick, with whom she works closely and develops a strong camaraderie over the course of the story. The name Proceed for the unit is thought to be derived from car models.

One of Integra's primary notable abilities is a power known as Overclock. This ability grants her enhanced physical capabilities, specifically explosive and instantaneous acceleration. However, this power places a significant strain on her body, particularly on her brain. As a result, she is typically limited to using Overclock only three times per mission.

Integra has a distinctive personality quirk where her demeanor changes noticeably when she grips a steering wheel. As a member of the RUC security forces, her initial role often places her in opposition to the main characters, Roy Revant and Solty, as she and her team are tasked with hunting down the runaway android Solty in the early parts of the series.

As the narrative progresses, Integra's role and motivations evolve. Along with her teammate Axela, she confronts the antagonist Ashley Lynx, driven by a deep-seated rage and a need to cope with significant personal losses. Her character is shown to be capable of deep emotional response, and she and Axela are given substantial focus in the series' later dramatic arcs, where their fight sequences and emotional struggles become a central point of the story. The material involving Integra and Axela is noted for its surprising emotional depth, particularly as they deal with their losses and the betrayal they suffer when they are framed and forced to go on the run.