Well, clearly Mr Campbell and Young David are the main characters. Mr Campbell could be an older, wiser figure, perhaps a teacher or a wizard - like character with a lot of knowledge. Young David, on the other hand, might be a curious and brave boy, eager to learn and explore.
One idea could be that Mr Campbell becomes a mentor to Young David, guiding him through various challenges in a magical world. They could go on quests together, facing mythical creatures.
A lot of Mr Young fanfiction also has the theme of facing challenges. He might have to overcome obstacles in school, in relationships or in some extraordinary situations. This makes the stories exciting and relatable for readers. And sometimes, there's a theme of mystery, where Mr Young has to solve some sort of enigma.
Yes, there might be. There are many fanfiction platforms out there where such stories could exist. You could start by checking popular fanfiction websites like Archive of Our Own or FanFiction.net. Just search for 'Mr Young Adam and Echo pregnant' on their search bars, and you might find relevant stories.
I'm not sure who 'David Young' specifically is within the context of 'Fantastic Fiction' without more information. There could be many people named David Young in the world of fantastic fiction, such as an author, a character, or someone involved in the publishing or promotion of it.
The theme of growth is quite common too. Through their relationship, both characters may grow in different ways. Adam might become more confident in expressing his emotions, and Echo could become more independent. Fanfictions often show this growth through different events and situations that they face together.