Well, without more specific information, it could be about many things. It might be about a real - life case where an agent, perhaps in the context of law enforcement, intelligence, or business, went 'rogue'. This could involve an individual who starts acting outside the rules, protocols, or ethics of their organization, causing all sorts of chaos and unexpected consequences.
Another theme might be power and its abuse. If the rogue agent is misusing their position or authority, that could be a central theme. Also, the concept of loyalty could be a theme. The contrast between the loyalty the agent should have had and the actions that made them 'rogue' would be interesting to explore. For instance, if they were driven by personal gain over loyalty to their colleagues or the mission of their agency.
One main theme could be betrayal. The rogue agent betrays the trust of their agency or colleagues by acting on their own or against the established rules. Another theme might be justice. If the agent is going rogue to expose something wrong, then the pursuit of justice is a key aspect. For example, they might be fighting against an unjust system within the agency.
Well, clearly from the title, the rogue agent and the angels are main characters. The rogue agent might be someone who has deviated from a normal or expected path, and the angels are there to tell a story, which implies they play an important role in the narrative.
One common characteristic is a sense of isolation. Since they are going against the norm, they are often cut off from their former colleagues and support systems. Another is a strong motivation that drives them to act independently. This could be a moral belief.
I don't know of any novel called 'Shadow'. Maybe it was because my knowledge was not comprehensive enough or that the name was not categorized in any of the novels that I knew. If you can provide more information or context, I will try my best to help you answer your questions.
I'm not sure specifically as I haven't read or heard about 'rogue agent the angels tell a story' in detail. It could be a story about redemption, perhaps the angels are telling a story to a rogue agent to guide them back to the right path.