Who could be the main character in a 'protector of land and sea pokemon fanfic'?

Maybe an older and more experienced trainer who has seen the destruction caused by those who misuse Pokemon power. This trainer decides to search for the 'protector of land and sea' Pokemon as a last hope to restore peace. They have a lot of knowledge about different Pokemon types and battle strategies, which they use to protect the Pokemon once they find it. They also act as a mentor to younger trainers who join them in their quest, teaching them the importance of protecting the land and sea and the Pokemon that inhabit them.

The main character could be a scientist who has been studying Pokemon and their habitats. They discover some unusual data that points to the existence of a powerful Pokemon that can safeguard the land and sea. Driven by their passion for knowledge and the well - being of the ecosystem, they set out to find this Pokemon and end up becoming the central figure in the story. They would use their scientific knowledge to understand the Pokemon better and to come up with strategies to protect it and the environment it is meant to safeguard.