Aside from Yama and Harlock, there could be other characters like Kei Yuki. She might be involved in some fanfics, especially those that explore the more complex relationships within the crew. Also, the villains or antagonists in the Captain Harlock universe can be important characters in fanfics. They create the conflict that Yama and the rest of the crew have to overcome.
One interesting Captain Harlock Yama fanfic could be about Yama's origin story. Maybe it delves into his past before joining Harlock's crew, his family, and what led him to a life of space adventure. Another could be a story where Yama has to face a personal dilemma while on a crucial mission for Harlock, like choosing between loyalty to the crew and his own moral beliefs.
One popular Harlock fanfiction could be the ones that explore his adventures in uncharted galaxies. For example, there are stories where he encounters new alien species and has to use his wits and the Arcadia's capabilities to overcome challenges.
Typically, in 'harlock x logan yaoi fanfiction', there is often a focus on the relationship between Harlock and Logan. It may explore their emotional connection, from initial attraction to deeper feelings. There could be elements of adventure or drama added to the mix, depending on the writer's creativity.
1 Ain't no Mountain High Enough - No one is
2 I'm more powerful than you think - I am
I'm not a spy- I'm not a spy but I'm a shield
4 This is your moment - This is your moment
5 You can't stop me - You can't stop me
6 I'm the one with the powers - I have the powers
7 I'm the one who makes the rules - I make the rules
8 You can't take my suit - My suit? You can't take my suit
I'm the Captain- I'm the Captain
I'm not just a man - I'm not just a man, I'm a vibranium man
I'm strong enough to take on the whole Marvel Universe
12 I'm not afraid of you - I'm not afraid of you
I'm the Steve Roger of the Marvel Universe
I'm not just a fan - I'm not just a fan I'm a fanatic
15 I'm not your friend - I'm not your friend but I am
16 I'm not a hero - I'm not a hero but I am
I'm not a superhero- I'm not a superhero but I am
I'm Not A Shield- My Shield? You can't take my shield
I'm not just a man with powers - I'm not just a man with powers, I'm a Vibrant Goldman
20 I'm the one who needs help - I'm the one who needs help
One main feature is its unique character design. Harlock has a very distinct look with his flamboyant yet menacing appearance. His ship is also iconic, often depicted as a large, powerful vessel. Another feature is the space adventure elements. There are battles in space, exploration of different planets and encounters with various alien species.
It has a space - pirate theme. So, there are lots of space battles and adventures. The main character, Harlock, is probably a very cool and brave figure.
I think it could be Emeraldas. She's a strong female character who often crosses paths with Harlock. Her beauty combined with her combat skills and her own sense of justice makes her really memorable. She adds a different dimension to the story compared to Harlock.
First, you should study the original Harlock series. Know the characters, their personalities, and the overall universe. This will help you stay true to the source material.