Ash's character could develop in several ways. First, his problem - solving skills will likely improve. Gible may present him with various challenges, such as not being able to master certain moves easily. To help Gible, Ash will have to come up with creative solutions. Second, his self - confidence might grow. As he trains Gible and they start achieving success in battles in Unova, Ash will feel more confident in his abilities as a trainer. He'll also become more aware of his own strengths and weaknesses, which will help him in his overall growth as a character. He may even start to share his experiences more with other trainers in Unova, becoming a source of inspiration for them.
Ash could become more patient. Since Gible might be a bit difficult to train at first, Ash has to learn to be patient with it. He might also become more adaptable as he has to adjust to the Unova region's unique Pokémon and training methods while training Gible.