Definitely Jack Ryan stands out. His journey from being a history professor to a CIA analyst and then into more dangerous roles is captivating. Then there's Mary Pat Foley. She is a shrewd intelligence officer. Also, Robby Jackson, Jack's friend, who is a military pilot. Their relationships and individual personalities make them all very memorable characters in the Jack Ryan series novels.
Cathy Ryan, Jack's wife, is also well - liked. She is a strong - willed woman who has her own career and often provides a different perspective in the story. And there's Admiral Greer, who is Ryan's mentor in the CIA and plays an important role in guiding Ryan through the complex world of intelligence.
There's also John Clark, who is often Ryan's ally. Clark is a tough and experienced operative with a lot of skills in combat and espionage. He has his own backstory that adds depth to the series. For instance, his military past shapes his actions and decisions in the story.
Obviously, Jack Ryan Jr is a main character. He is young, intelligent, and brave, often getting involved in dangerous and complex situations.
One of the main characters from Jack Ryan novels is Jack Ryan, of course. He is a complex character with a sharp intellect and a strong sense of justice. In the novels, he faces numerous challenges and threats, both domestic and international. Another important character is Greer, who is Ryan's mentor in the CIA. He guides Ryan through the complex world of intelligence and espionage. There's also Robby Jackson, a military man who is friends with Ryan and often gets involved in the events that Ryan is dealing with.
I think Sergeant Horvath is a memorable character. He is always there to support Captain Miller. His loyalty to the captain and his comrades is something that makes him stick in your mind. Then there's the medic Wade. His kindness and the way he tries to save the wounded in the middle of the chaos of war is really memorable.
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.
Jamie Fraser is definitely one of the most memorable. His strong will, loyalty, and charm make him stand out. Claire Randall is also very memorable. Her intelligence and courage as she navigates different time periods are remarkable.
Hari Seldon is really memorable. He's the one who developed psychohistory. His foresight and planning set the whole story in motion. Then there's Salvor Hardin. He was very clever in dealing with the political situations on Terminus. Another is Gaal Dornick. He was important in the early parts, as he was brought to meet Hari Seldon and became part of the Foundation's story from the start.
Merlin himself is very memorable. His magical abilities and his loyalty make him stand out.
Jason Bourne is definitely at the top. His complex personality, with his struggle between his trained assassin self and his quest for a new identity, is fascinating. Marie, who helps Bourne on his journey, is also very memorable. Her relationship with Bourne and her own courage in the face of danger make her an important character. And then there is Abbott, a high - ranking figure in the intelligence world whose decisions and actions have a big impact on the plot.