Ub Iwerks was a highly influential figure in the history of animation. He was one of the key creators behind some of the most iconic early Disney characters. His work was fundamental in the development of the art of animation. He had a unique style and his skills with the pen and in creating movement were remarkable. He was like the 'hand behind the mouse' in the sense that he was one of those who really brought to life the early days of animated characters that became so beloved worldwide.
In the Ub Iwerks story, 'hand behind the mouse' is significant as it represents his behind - the - scenes role. He was the one doing the detailed animation work. He gave the mouse its distinct look and movement. Without his efforts, the mouse character may not have had the same global appeal. He was the driving force in the early development of this iconic character.
Well, you could go for something like 'Nathaniel J Potvin and I: An Unforgettable Fanfiction'. This gives a sense of a personal story. Or perhaps 'In the Realm of Nathaniel J Potvin: A Reader's Adventure', which implies an exciting journey in the fanfiction world with him. Also, 'Nathaniel J Potvin: The Heart of My Fanfiction' could work as it shows his importance in the story.
A theme of redemption can also be found in some 'j'onn x oc supergirl fanfiction'. Maybe the OC has a dark past or made some mistakes before coming into the Supergirl universe. J'onn, with his sense of justice and compassion, helps the OC to atone for their past deeds. Also, the theme of family is sometimes explored. J'onn, who has lost his own family, may see the OC as a new family member or someone to protect, and this relationship can be a central part of the story.
One common theme could be the clash of different worlds. Naruto's ninja world and Valkyrie Drive's world are very different, so exploring how the characters adapt to each other's worlds is often seen.
Since I'm not well - versed in J J Fletcher's specific war novels, but in general, war novels might have detailed descriptions of military strategies. Maybe J J Fletcher's works also include such aspects.
I don't know exactly who J Andrews is in this story without reading it. But it's likely the protagonist or someone central to the events of the daydream - filled day.