The four Grandmasters were the Qing Emperor, who had hidden in the depths of the Palace for more than 20 years, Shou Ye Liuyun, the Northern Qi Imperial Advisor Ku He, and the Guardian God of Dongyi, Sigu Jian. However, there was no mention of the people who had not appeared, so there was no way to know.
The Four Great Grandmasters were important figures in " Celebrating Years." They were the Imperial Advisor of Beiqi Kingdom, Ku He, the Qing Emperor of the Qing Kingdom, Sigu Jian of Dongyi, and Ye Liuyun of the Qing Kingdom's Ye family. Each of these four grandmasters had their own stories and characteristics, and they played an important role in the play. Other than the four Grandmasters, there were also some people who had yet to appear, such as Wang Chongyang and Huang Shang. As for these people who had yet to appear, there was no relevant information in the current search results, so it was impossible to give a specific answer.
It could be a rogue Death Eater who has mastered a new form of invisibility spell. This Death Eater might be seeking revenge on those who opposed Voldemort.
One common theme is friendship. In Skins, the friendships between the characters are complex and dynamic, and fanfiction often explores these relationships further. Another theme is coming - of - age. The characters in Skins are going through a lot of changes and growth, and fanfiction can delve deeper into their personal development. Love and relationships are also popular themes, whether it's romantic love, family relationships, or the relationships between friends.
First, really understand the characters. Know their personalities, quirks, and backstories from the show. Then, create an interesting plot that could fit within the Skins universe. It could be something that expands on an event in the show or a completely new scenario. Also, use the unique language and style of the show. Skins has a distinct way of speaking, and incorporating that into your fanfiction can make it more engaging.