To create a believable character arc for Caleb, start with his existing traits. Caleb is known for his tech - savvy and loyalty. So, you could show him starting to doubt his loyalty to his friends when a big opportunity comes his way. Maybe he becomes a bit too obsessed with a new tech project and starts to neglect his relationships. Then, through a series of events like a betrayal by the new people he's involved with in the project, he realizes the importance of his true friends and comes back to his old self but with a new understanding of balance in his life.
A believable character arc for Caleb can be built around his relationship with Hanna. At the start, they could be in a really good place in their relationship. But then, Caleb starts to feel like he's not achieving enough in his career. He becomes distant from Hanna as he chases after new tech - related achievements. However, as he progresses, he realizes that all the success in the world means nothing without Hanna. He then has to work hard to win her back. This arc shows his growth from being a bit self - centered in his career pursuits to realizing the importance of love and relationships. Along the way, he also learns more about himself and his insecurities, which makes him a more well - rounded character in the fanfiction.
For Caleb's character arc, consider his background. He's had a bit of a rough past. You could have him start off in the fanfiction trying to completely leave that past behind. He could be overly confident in his new life in Rosewood. But then, something from his past resurfaces, like an old acquaintance who tries to drag him back into some illegal activities. As he struggles to resist, he grows as a character. He learns that he can't just run away from his past but has to face it and use it to become a better person. He becomes more empathetic towards others who have similar issues in Rosewood.