Obviously, Harry Potter himself is very likely to survive. He has survived so many dangerous situations in the original series, and his magical abilities and quick thinking would give him an edge in a plane crash situation.
Ron Weasley might also survive. Despite his sometimes clumsy nature, he has proven his loyalty and courage many times. In a plane crash, he could rely on his friendship with Harry and Hermione and his own magical skills, such as using his wand to perform defensive spells or to help find a way out of the wreckage.
Obviously, Harry Potter himself could be the main character. He has a lot of experience dealing with dangerous situations, so he would be a natural choice to lead the efforts to survive the plane crash and deal with any subsequent magical threats.
Well, I think Ginny Weasley would be a strong survivor. She's feisty, brave, and a skilled witch. Her Bat - Bogey Hex could be used to great effect against opponents. Luna Lovegood could also make it. Her unique perspective and knowledge of magical creatures might give her an edge. For example, she might be able to befriend some strange magical creature in the arena and use it to her advantage. And of course, Harry Potter with his ability to face great evil and his quick thinking would be very likely to survive as well.
In certain fanfictions, the plane crash could transport Harry and his companions to a parallel magical world. There, they encounter different versions of themselves and magical creatures they've never seen before. Harry has to figure out how to get back to their own world while also dealing with the challenges in this new and strange place. This often involves a lot of exploration and interaction with the local magic, which is different from what they know in their own Hogwarts - related magic.
Rick from The Walking Dead has strong leadership skills. He could organize the wizards and witches and lead them in battles against the undead. In the Harry Potter world, Severus Snape could survive. He's a master of potions and dueling. He could use his potions skills to create antidotes for any possible new diseases brought by the undead, and his dueling skills to fight off both the walking dead and any threats from the magical side.
The younger students at Hogwarts are quite likely to read Harry Potter fanfiction. They are at an age where they are really into the wizarding world and would be curious about different interpretations. Students like Colin Creevey, who is a big fan of Harry, might be eager to read fan - created stories about his hero. Also, the members of Dumbledore's Army, such as Luna Lovegood and Neville Longbottom, seem like the types who would be open to exploring fanfiction.
Another possible character could be a scientist or an engineer on the plane. This person could use their knowledge to try to repair some sort of communication device or build a more effective shelter. Their skills would be very useful in the situation, and they could form a sort of team with Beckett to increase the chances of survival for everyone.
Hermione is a very likely candidate. With her intelligence, she could easily start a business. For example, she might open a library - like establishment but with rare and restricted magical books that she has managed to collect through her research. She could charge a membership fee for witches and wizards to access these valuable resources.
In addition to the main ones, there could be some original characters created for this fanfiction. For example, a wizard who is secretly working for the Queen's enemies. There might also be some magical animals that are either helping Harry or causing trouble. And of course, the Queen's advisers and guards would be part of the story as they interact with Harry and the magical world.
The main characters would surely include Harry Potter. He's the center of the story as he is the one with the Veela aspect. Ginny Weasley could also be a major character. If Harry is a Veela, it would change their relationship dynamics. Additionally, Dumbledore might play a significant role as he would be guiding Harry through this new discovery and helping him understand and control his Veela powers.
Dumbledore might also make an appearance in some form. Maybe as a guiding spirit or through some magical means. His wisdom could play a role in helping Harry through this process.