The main character is Rimuru Tempest. He is a slime who has unique powers and a great deal of charisma. Another important character is Veldora, the storm dragon who befriends Rimuru. There is also Shizu, a human who has an impact on Rimuru's early development. And then there are characters like Benimaru, a powerful ogre who becomes one of Rimuru's loyal followers.
In the Tensura web novel, Rimuru Tempest is the central figure. He is a slime with unique abilities. Shuna is another important character. She is often involved in the management of Rimuru's nation. Diablo, a powerful demon, is also a main character. He serves Rimuru and is extremely powerful in combat. These characters, along with many others, contribute to the development of the story, with their different personalities, abilities, and goals.
In Tensura Light Novel, Diablo is an interesting character. His elegant and powerful demeanor, along with his unwavering loyalty to Rimuru, makes him captivating. Gobta, despite his comical and sometimes clumsy nature, also adds a lot of charm to the story. And there's also Rimuru's teacher, who plays an important role in his early development and is an interesting figure in the overall narrative.
The main character is likely Rimuru Tempest. He's been central to the series throughout. There may also be other important characters like his friends and allies in the Jura Tempest Federation.
I'm not entirely sure without reading it specifically, but it's likely that Rimuru Tempest is still a main character as he's central to the 'Tensura' series. He has been on a journey of growth and development throughout the previous volumes, so he would probably continue to play a major role in this one.
Most likely, the important characters in Tensura Volume 20 would be the ones who have been central to the story so far. The protagonist, who has been evolving throughout the series, is sure to be important. There might also be some recurring side characters who play crucial roles in this volume's plot, like his allies or those with special knowledge about the world or the challenges he faces.
Rimuru is likely to be one of the most important characters as he is the central figure in the Tensura series. His actions and decisions usually drive the plot forward.
Rimuru is definitely one of the most interesting. His transformation from a simple slime to a complex and powerful leader is fascinating. Then there's Shuna. Her loyalty to Rimuru and her skills in cooking and management make her stand out.