Well, a possible plot twist might be that the pregnancy is a false alarm caused by some new genetic anomaly in Maximum Ride's hybrid body. It could lead to a lot of confusion and self - discovery for her as she tries to figure out what's really going on. And perhaps the baby has some extraordinary powers even before birth that start to show up and cause chaos or draw new threats.
In this fanfiction, a plot twist could be that the pregnancy is a result of time - travel shenanigans. Maybe Maximum Ride travels back in time, has an encounter that results in the pregnancy, and now she has to deal with the consequences in her own time. This could bring in a whole new set of characters from the past and create a complex web of relationships and challenges for her to navigate.
One plot twist could be that the pregnancy is part of an experiment by the evil scientists again. They might be using it to study the growth and abilities of the half - human, half - bird hybrids. Another could be that the father of the baby is someone unexpected, like a character who was thought to be an enemy but turns out to have a different side.
Another plot twist could be that the pregnancy progresses at an extremely abnormal rate. This could put Renesmee's life in danger and force her and her loved ones to find a way to slow it down or deal with the consequences of a very rapid development. It could also lead to some unexpected revelations about her own nature and abilities.
It could be Max herself. Given her central role in the story, a pregnancy for her would bring a whole new set of challenges and changes to the dynamic of the flock.
One interesting plot twist could be the combination of powers. In Twilight, vampires have their own set of abilities like super strength and speed. In Maximum Ride, the characters have wings and enhanced physical capabilities. If you cross them over, perhaps a character from Maximum Ride could gain some vampire - like powers, like mind - reading. This would completely change the power dynamics in the story and lead to some really cool action scenes and new conflicts.
One possible plot twist could be that Robin discovers he has some magical heritage that affects the pregnancy in an unexpected way. Maybe his magic interacts with Regina's and causes strange things to happen during the pregnancy, like the baby having unique powers from the start.
One possible plot twist could be that Tani Rey discovers she's pregnant during a really challenging time in her life, like when she's in the middle of an important mission. This would add a whole new layer of drama as she has to balance her personal situation with her duties.
A possible plot twist is that the goddess was actually cursed before getting pregnant, and the pregnancy is part of a larger scheme to break the curse. Percy has to go on a dangerous quest to find the antidote or solution to save both the goddess and the unborn child. It could also turn out that the child is prophesied to be a great hero or a great danger, leading to different factions trying to influence the outcome.
One possible plot twist could be the discovery of some hidden power in their unborn child. In the world of Percy Jackson, powers are often unexpected. Maybe the baby has a unique ability related to both Annabeth's wisdom and Percy's water - controlling powers. This could lead to various adventures as they try to protect the baby from those who might want to use its power for evil.
Fang would probably be protective. He has always been close to Maximum Ride, and with her pregnant, he would be on high alert to keep her safe from any threats. Iggy might be a bit more practical, helping to set up a safe place for her to stay during the pregnancy. Nudge would be excited and full of questions, constantly asking about the baby.
One interesting plot twist could be when the characters from Maximum Ride and Percy Jackson universes find out they have a common enemy. Maybe a powerful ancient being that has been manipulating events in both their worlds. This would force them to team up in unexpected ways, with the winged kids from Maximum Ride using their flying abilities and the demigods from Percy Jackson bringing their unique powers to the fight.
One idea could be exploring how the character copes with the physical and emotional changes during pregnancy in a world full of the unique challenges from the Maximum Ride universe. Maybe she has to deal with threats while protecting her unborn child.