In a 'black jack novel', if it's centered around the card game, the main character could be a professional blackjack player. He might have a mentor, an older and wiser player who taught him the ropes. There could also be a casino owner or a pit boss as significant characters. The casino owner might be trying to keep the player in check or might be involved in some sort of underhanded dealings that the main character discovers. And the pit boss could be the one who directly interacts with the player during the games, adding to the tension and drama.
Since I don't know the exact 'black jack novel', it's hard to say. But it could have a character named Black Jack as the main character. There might also be a love interest, like a female character who plays an important role in his life. And perhaps an antagonist, someone who is constantly opposing Black Jack in his pursuits.
If the 'black jack novel' is more of a fictional adventure story, the main character, Black Jack, could be accompanied by a group of friends or comrades. One of them could be a tech - savvy person who helps Black Jack in tricky situations, like hacking into systems or decrypting codes if there are such elements in the story. Another could be a strong and fearless fighter who protects the group when they face physical threats. And there might be a wise old man who provides guidance and advice based on his years of experience in the world that the story is set in.
Since it's a Jack Ryan story, Jack Ryan is likely to be one of the main characters. But without more information, it's hard to say who else might be involved. There could be some new characters created specifically for this 'Black Jack' story, or it could also feature some recurring characters from the Jack Ryan series.
The main character is of course Dr Black Jack himself. He is a brilliant and mysterious doctor.
Obviously, the main characters are Black Jack and Bolton.
If the 'jack black cave story' is based on a well - known story, and if Jack Black is a real person's name being used for a character, then Jack Black would be one of the main characters. But without more information, it's difficult to determine if there are other main characters. Maybe there could be a sidekick or an antagonist like a cave - dwelling monster.
Perhaps in a 'black jack story' set in a fictional world, the main characters could be Blackjack masters who travel around competing in high - stakes Blackjack tournaments. They might have unique abilities or strategies related to the game. There could also be antagonists, like cheaters or those who try to disrupt the fair play of the tournaments.
Jack Reacher is obviously one of the main characters. There may be other characters like the antagonists who oppose him in the story, perhaps some law enforcement officers or criminals, but without more specific knowledge about the exact 2010 novel, it's hard to name them precisely.
Obviously, Samurai Jack himself is one of the main characters. He's the noble samurai, out of his time, fighting against the forces of evil in a strange future.
Obviously, Repairman Jack is a main character. There may also be clients who bring him problems, like people in trouble or those with mysterious requests. And there could be antagonists, people or forces that are causing the problems he has to fix.
It depends on the specific graphic novel. But some of his more well - known characters include the Fantastic Four. Mr. Fantastic, Invisible Woman, Thing, and Human Torch are all very distinct characters with their own personalities and powers.
It's likely that Jack is a main character. He could have friends or family members in the story as well. If the box has some sort of power or mystery, there might be other characters who are either affected by it or trying to figure it out. Maybe there's a wise old man who gives Jack clues about the box, or a young sidekick who joins Jack on his adventure related to the box.