Maybe a young heir who was not fully prepared to take over. This character has to grow and learn quickly in the chaos that follows the king's departure. He or she might face many challenges and opposition from those who think they are more qualified to lead.
There might be a group of rebels who were against the king. After the king is gone, they now have their own plans for the kingdom. They could be trying to establish a more democratic system or simply take over for their own self - interests. Their actions and motives would be central to the stories.
There could also be characters like the Ticklish Princess. She might be someone the Tickle King tries to cheer up with his tickling skills. And then there are the little Ticklish Elves who are always around, either helping or getting in the way of the Tickle King's adventures.
Simba is the main character. He is the lion cub who becomes king. Then there is Scar, his evil uncle who wants the throne for himself. Mufasa, Simba's father, is also a very important character.
There are also often human characters who interact with the Vampire King. Take Lucy from certain stories. She is a young, curious woman who gets caught up in the Vampire King's world. She may start off as a victim but then could become something more, like a love interest or a pawn in his power games. Her reactions to the Vampire King's presence and his actions drive a lot of the story's plot.
The main character might be the 'spa king' himself. He could be a visionary entrepreneur in the spa industry, with a personality that draws people to his spas.
King Edward himself is likely to be a main character. He would be at the center of many events, ruling the Saxon kingdom. There might also be his loyal knights or generals, who would be important in battles and in maintaining order in the kingdom.
Merlin is also a very important character. He is the wizard who has great powers and often guides Arthur. He uses his magic to help Arthur in many situations, like when Arthur was just starting his journey to become king. There are also the knights of the Round Table. They are a group of brave knights, each with their own personalities and skills, like Gawain who is known for his courage and loyalty.
Arthur is a main character, of course. He is the king and the central figure around which the stories revolve.
King Arthur and his knights are the main characters.
There might be his loyal servants as main characters too. They would be constantly trying to get the king to do his duties, creating a lot of comical situations.
Nala is also a main character. She is Simba's friend and later his mate. She is strong and plays an important part in the stories, especially in supporting Simba.