Loyalty is a very common theme. Since the royal guards are all about protecting the royalty, loyalty to the princesses is often explored in these fanfics.
One great Death Guard story could be about their unwavering loyalty in the face of extreme challenges. They are known for their tenacity and their ability to endure difficult situations. For example, in a battle against a powerful enemy force, the Death Guard held their ground despite being outnumbered. Their unique combat style and their use of diseased weaponry made them a force to be reckoned with.
There are stories of their unique uniforms too. The tall furry hats they wear, known as bearskins, have a long history. These hats were originally made from real bear fur. They add to the grandeur and traditional look of the guards. Also, their red tunics are iconic. Many visitors come just to see them in their full regalia.
The main theme is often corruption. The Death Guard are chaos-corrupted, and this is shown through their actions and the spread of the plague. Another theme is loyalty, in a twisted way. They are loyal to their chaos gods and to Mortarion.
Mortarion is also a central character. His journey from a Primarch to a servant of Nurgle is a major part of the story. His decisions and actions shape the fate of the Death Guard as a whole.
The Horus Heresy Death Guard novels are great reads. One of the things that stands out is the detailed descriptions of the battles. You can almost smell the stench of the Death Guard's plagues as they spread across the battlefield. These novels also explore the relationships within the legion, like the bond between the marines and their leaders, which is really interesting.
Wang Quan Fu Gui was a character in the national comic " Little Fox Demon Matchmaker " and its derivative works. He was a young genius of the Wang Quan family, a Taoist soldier, the ultimate weapon of the One Qi Dao Alliance. He had killed tens of thousands of people and was known as " Taoist Soldiers Kill Qianmo." In the chapter of the royal power, Wang Quan and Gui Gui died in order to protect Qing Tong, which was specifically in episode 12.
While waiting for the TV series, you can also click on the link below to read the original work of " Little Fox Demon Matchmaker " to understand the plot in advance!
Well, he would probably bring his magic skills into play. He could use spells to enhance the security of the Royal Guard. For example, he might cast protective charms around the royal palace that are far more powerful than any muggle security system. His broomstick flying skills could also be useful for quick patrols or emergency responses. He'd be a very unique addition to the Guard, that's for sure.
Harry Potter is surely a main character as he is the one making the call. As for the royal guard, there could be a leader among them who becomes a central figure. Also, Dumbledore might still play an important role in the fanfic. He could be the one who gives Harry the idea or helps him deal with the implications of bringing in the royal guard. Hermione and Ron would probably be around to support Harry and offer their unique perspectives on the situation.