An alert flashed on screen, and he pulled up some information on it. Since the failed attack on Earth by Thanos, the Nova Corps had investigated how a planet in the intergalactic Styx where a digital watch was still the height of civilization had thwarted the deadliest Titan in the universe. They had collected files on all the Avengers and those involved in the attack.
This Hawkeye was a founding member of the Avengers, and his claim to fame was that he had no powers other than amazing eyesight. Isabella of Detroit had no Nova file, instead mentioned in their file on Loki and his continuing involvement on Earth. He looked closer at that file.
According to the Nova Corps, Loki had been used by Thanos as a tool to obtain the Tesseract, which he had been told by Gamora. According to the file, Loki had been captured by Thanos on Cestar, a planet in the Cassiopeia system and used to attack Earth, but was easily thwarted by the Avengers, perhaps too easily.
After that, Nova had kept a close eye on Loki, and after breaking out of prison and impersonating the king of Asgard, in a fit of uncreative punishment, he was sent to Earth. Something must have happened on Earth because when a Jotun attacked, he saved the universe from destruction. Somehow Quill knew it had something to do with his wife, who sat stoically in the hold. Isabella of Detroit was labeled as an agent of SHEILD, the Strategic Homeland Intervention Logistics Division. There wasn't much more information about her than that. They didn't know her strengths, they didn't know her weaknesses and they certainly didn't know how she would react to Thanos.
However, this file was classified, and not all of this information had been made available to the public. For one, it wasn't made public knowledge that Thanos was behind the attack, and the six missing months of the prince's life, between his capture and the attack on Earth.