Obviously, Tunnel Rat is a main character. He is often depicted with his signature look and his skills related to underground operations.
Other GI Joe characters like Duke or Scarlett might also be involved. Duke could be leading the mission that Tunnel Rat is a part of, while Scarlett might be providing intelligence support. Their interactions with Tunnel Rat add depth to the fanfiction story.
One interesting 'gi joe tunnel rat fanfiction' story could be about Tunnel Rat's solo mission in an underground complex filled with traps and enemy agents. He uses his wits and unique skills to outmaneuver the foes.
Some of the main characters from GI Joe might include Duke, who is often a leader - type figure. Snake Eyes, the silent and deadly ninja. And from Cobra, we might have Cobra Commander, who is the mastermind behind Cobra's evil deeds.
Hasbro is the owner of the GI Joe comics. They have held the rights for a long time.
Cobra Commander could also be a great addition. His evil plans and his forces could provide the main conflict for Snake Eyes in the crossover. And if we want to expand the scope, characters from other military - themed franchises could be included. For instance, characters from 'The A - Team' could make for an interesting crossover. They have different fighting styles and personalities that could clash or mesh well with Snake Eyes. Imagine Face and Hannibal devising plans while Snake Eyes executes them with his ninja stealth.
Without having read 'the long tunnel story', it's impossible to say who the main characters are. But they could be explorers if it's an adventure - type story, or ordinary people who find themselves in an extraordinary situation in the tunnel.
I'm not sure specifically as I haven't read this particular 'the tunnel short story' in detail. But usually in a short story, there could be a protagonist who is likely the one going through the experiences related to the tunnel.
In 'through the tunnel story', the principal character is a boy. He is the one who undertakes the challenging task of swimming through the tunnel. His mother is also a part of the story. She is there at the beach, and her presence gives some context to the boy's actions. However, the boy is the central figure, and the story revolves around his growth, determination, and the adventure he has in the tunnel.
I'm not sure specifically without reading the story, but it could be a young adventurer who enters the tunnel.
As I don't know the exact 'the tunnel true story', I can't tell you the main characters. It could be engineers if it's about tunnel construction, or maybe rescuers if it's a story about a tunnel - related emergency.
There's no way to tell without having read the story. However, in a typical short story about a tunnel, the main characters might be explorers. They could be scientists looking for geological data in the tunnel or thrill - seekers who just want to experience the unknown. Another possibility is that the main character is someone who is forced to go through the tunnel for some reason, like a refugee or a person on the run.