I'm not sure which specific novel 'Gavin' is from. There are many novels with various characters named Gavin. It could be a minor or major character in a particular story, perhaps a protagonist, antagonist, or just a supporting character.
In such fanfiction, rk900 is often depicted as highly intelligent and efficient. He is extremely logical and has a vast knowledge base. For example, he can quickly analyze crime scenes and come up with solutions. Gavin, on the other hand, is more impulsive and hot - headed. He acts on his instincts first but also has a strong sense of justice. He may not be as tech - savvy as rk900, but his street experience gives him an edge in certain situations.
Gavin is often characterized as a tough - as - nails detective. He's usually shown as having a gruff exterior but a soft heart deep down. Writers might give him a bit of a hot - headed streak, especially when it comes to dealing with androids at first. But as the story progresses with his interactions with RK900, he becomes more understanding and empathetic.
If the novel is a mystery, Gavin could be very observant and intelligent, always on the lookout for clues. He might be quiet and reserved, keeping his thoughts to himself until he has enough evidence to make a move. On the other hand, if it's a coming - of - age story, he could be a bit naive at first, but grow and learn throughout the novel.