Well, in many fanfictions, Naruto might use his ninja skills. He could use his speed to reach Artemis quickly if she's in danger, like if she's being attacked by some powerful enemy. His shadow clone jutsu could also be useful to distract the foes while he rescues her.
Artemis would probably be furious. As a goddess associated with protection, especially of women and girls, she would see this as a great injustice. She might immediately start planning revenge on the one who did this to Percy.
Maybe Artemis is on a hunt when she stumbles upon Percy. She might be initially cautious, as she's a goddess and Percy is a demigod. She could question him about his presence in Texas.
The origin story of Artemis is rich in mythological details. She emerged as a powerful deity associated with nature and female empowerment. Born from divine parents, Zeus and Leto, she quickly became a significant figure in Greek mythology, with her skills and attributes shaping her role as a protector and huntress.
No, Hotel Artemis wasn't a comic book. It was an original concept developed for the movie industry, offering a fresh and engaging storyline without having its roots in comics.
In the manga, Luna and Artemis are more like partners and friends. There's no indication of romantic love between them. Their bond is based on mutual support and working together.
I'm not sure if there are many such fanfictions as the concept of Artemis being pregnant goes against the original Greek mythology and her status as a virgin goddess in the Percy Jackson series. However, you could try searching on large fanfiction platforms like Archive of Our Own (AO3) and use the tags 'Pertemis' and 'alternate universe' to see if any authors have explored such an idea.
He might be confused at first. Percy has always been a bit of an outsider among the gods, but he may not expect Artemis to hate him. So he would try to figure out what he had done wrong.