Since I don't know the specific 'secret lair another story', I can't say for sure who the main characters are. They could be adventurers, heroes, or even villains.
There's no way to tell exactly who the main characters are in 'secret lair another story' without more information. However, in a story like this, common main characters could include a brave explorer who is determined to uncover the secrets of the lair. There might also be a wise old mentor - type character who gives advice to the others. Or it could be a group of friends who stumble upon the secret lair and have to work together to survive whatever they find inside.
I'm not sure specifically what 'secret lair another story' is about without more context. It could be a story related to a secret place, perhaps a hidden location in a fictional world where some mysterious events take place.
The dragon Singe is a significant character as well. It is the main antagonist that guards the lair and stands in the way of Dirk rescuing the princess. The dragon is often depicted as powerful and menacing.
There could be a young adventurer as the main character. This person might be on a journey to prove themselves and decides to enter the dragon's lair. They could meet other characters along the way, like a wise old hermit who gives them advice on how to deal with the dragon, or a group of thieves who also have their eyes on the lair's treasures.
In addition to Christine and the Phantom, Meg could be a main character in a 'Phantom of the Opera Final Lair' fanfiction. Maybe she has always been secretly in love with the Phantom and she follows Christine to the final lair. She could be a source of jealousy for Christine and also add a new layer of complexity to the relationships in the story. There could also be a new character, perhaps an old friend of the Phantom's from his past, who shows up in the lair and reveals some long - hidden truths about the Phantom.
As there is no information given about this story, it's impossible to say who the main characters are. They could be ordinary people with an extraordinary secret, or they could be fictional characters created for a specific plot.
Given the lack of context regarding the 'bastos secret secret story', we can only speculate about the main characters. If Bastos is a person, perhaps they are the central figure, and there could be friends, family members, or foes around them that are part of the story. Maybe there are also some mysterious figures that help or hinder Bastos in the discovery or protection of the secrets in the story.
In 'The Secret in Their Eyes Story', there could be a detective - like character as one of the main characters. This person would be observant and would focus on the eyes of suspects or other people involved in the mystery. There might also be a character who is the keeper of the most important secret. This character would be acting in a way to avoid having their secret discovered through their eyes. And perhaps there is a love interest as well, whose eyes hold a different kind of secret, like a hidden passion or a past relationship.
Since I don't know the details of 'the secret grave story', I can't say for sure who the main characters are. But they could be the people who discover the secret grave, like an archaeologist or a curious local.
The main character is a young hero. There is also a female character who becomes an important ally in the adventure. And there are some wise old men who guide the hero on his journey regarding the secrets of Mana.
Since I don't know the exact 'Secret of the Nile Story', I can't say for sure who the main characters are. But they could be explorers, local people living near the Nile, or maybe even some mythical creatures if it's a fictional and fantastical story.