Blindspot was created by Tony Bedard, Karl Moline and Derec Donovan.
While little is known about her background, Blindspot and Sunfire had worked with Rogue and Mystique when they were members of the Brotherhood Of Evil Mutants. This was back when Sunfire was still working with his uncle. Blindspot had the ability to erase and restore memories at will. The four were on a mission to steal Lord Dark Wind's Adamantium process. Mystique then left Blindspot because she did not trust her. Since she always erased the memories regarding her, Blindspot wiped the minds of anyone who was involved with the Brotherhood so no one could remember her.
Blindspot discovered that Lord Dark Wind wanted the four dead for trying to steal his adamantium process. Realizing how the others would be in danger, as they had no memory of the mission, Blindspot went to Japan to erase his memory of the ordeal. On arrival, she discovered that his daughter, who had transformed into Lady Deathstrike, had already killed him. So Blindspot tried to erase Deathstrike's memories as well.
However Lady Deathstrike was a cyborg, more machine than woman, and was able to restore her memories thanks to the ability to reboot her memories like a hard drive. She then kidnapped Blindspot, who released a photo of Sunfire, Rogue, and Mystique to attract their attention so they would try to save her. Mystique never came, but Rogue met Sunfire in Tokyo in order to try discovering who was responsible. They ran into Lady Deathstrike, who, in a heated battle, cut off Sunfire's legs, leaving him in critical condition, while Deathstrike imprisoned the two. There Rogue met Blindspot, who restored Rogue's memories and did all the explaining about what was happening.
When Deathstrike discovered that the three were not actually responsible for stealing the adamantium bonding process, she tried to kill them to destroy any evidence of what she did to them. A weakened Sunfire asked Rogue to absorb his powers because he was worried that she would harm him. Blindspot pushed her lips onto Sunfire's face, causing her to absorb all his powers and in the process, possibly killing him. With these powers, Rogue got revenge on Deathstrike, severely injuring her. When the X-Men arrived to intervene, Blindspot erased Rogue's memories of being an X-Man, causing her to see her teammates as her enemies. After the brief mixup, she told the X-Men what had happened to Sunfire, but his body was not there, Blindspot has not been seen since.
Powers & Abilities
Blindspot is able to selectively absorb the memories of others and store them within her own mind via touch. After she absorbs them, she can keep the memories indefinitely or give them to others, regardless of whom the experiences actually belong to. According to Lady Deathstrike
, she must be touching the person she is altering, and it must be an organic body part. As a result, most of Deathstrike's body is immune to her power. The person affected is generally unaware that something is 'missing'. However, some seem to know that their memories have been altered. Whether or not the memories linger in her mind after she dispenses them to other individuals is unknown.
Notably, Blindspot seems completely immune to Rogue's powers. Blindspot's powers, however, do affect Rogue. Though both involve skin-to-skin contact, but it is unknown why their powers interact in this manner.