I am unable to determine the origin of the Colossus you are referring to. If you can provide more information such as the title of the picture, the author or other context information, I will try my best to help you find the source.
The term 'colossus novel' is rather ambiguous. It could refer to a novel that is physically large, like an oversized or special edition. Or it could be a novel that has a colossal, or extremely significant, concept at its core. For example, it could be about a colossus - like figure in history or mythology, and the story could revolve around this figure's actions, their impact on the world around them, and the lessons that can be learned from their life. It could also be a novel that explores the idea of something being colossal in a more abstract sense, such as colossal love, colossal ambition, or colossal folly.
Nero was a fictional character in the game " Original God " and one of the main villains of the game. He was a demon from the mysterious world with extremely high combat ability and evil nature. In the game, his story ran through the entire plot of the game. He was a character that attracted the attention of the players.
Nico was a fictional character in the Japanese manga "Original God" and one of the male protagonists of the game. He was a young man with powerful magic power and combat ability, but he was also a man full of ambition and desire. His personality was very unique, often showing extreme violence and indifference, but also having a moment of kindness. He was a very charming character.