Car-Oll, also known as Ms. Marvel was a Kree spy and warrior who was sent to visit and monitor the Earth so the Kree could use it as a base in their way against the Skrulls. At some point, though, she aided the Avengers in their battle against the Chitauri, and was inducted into the team. Eventually, she befriended them, and though she was still loyal to the Kree, the mission was no longer her main focus: protecting the Earth was. Eventually, however, the Kree did invade Earth, during which time, her fiance Mra-El, revealed the invasion plans to her teammates. Distraught, she called off the marriage for his blatant destruction of humanity and for fighting the Avengers.