The devil in manhwa can take many forms. It could be a traditional evil character with horns and a pitchfork, or it could be a more symbolic representation of evil or temptation. It all comes down to the imagination of the author and the message they want to convey through the story.
To survive, you should build alliances with the right characters. Also, stay away from obvious traps and don't trust everyone easily. Keep a low profile when necessary.
The Silver King is a character with a rather interesting story. In some stories, he might be a heroic figure, known for his great deeds and noble character. However, without more specific context about which 'Silver King' you are referring to, it's a bit hard to go into great detail. It could be a character from a particular book, movie, or even a local legend.
One characteristic is the powerful protagonist. In 'devil king novels', the devil king is usually very strong, with extraordinary powers like magic or combat abilities. For example, in 'Overlord', the main character has a wide array of powerful spells.
The 'King Solomon Silver Story' might refer to stories related to King Solomon's wealth, which could involve his legendary silver treasures. But without more specific context, it's hard to say exactly.