One common theme is redemption. Puck especially has a bit of a rough past in the show, and fanfiction often explores his journey towards redemption, with Finn sometimes playing a role in that. Also, the theme of family comes up. Given their different family situations, fanfiction might look at how they support or envy each other's family situations. There's also the theme of loyalty, as they are part of the Glee club and have to be loyal to their friends there, which includes each other.
One common theme could be the exploration of unexpected parenthood. Since it's mpreg, it's a very different take on having a child. Another theme might be the relationship between Puck and Finn, how they deal with this new situation together or separately.
Family is also a theme sometimes. Since Glee often touches on family issues, in fanfiction, Shelby and Puck might form a sort of surrogate family for each other. For example, Puck might find the motherly figure he lacked in Shelby, and Shelby might see Puck as a son - like figure she can nurture and help along the way.
There are often themes related to growth and change. Puck has to grow up fast when he becomes a father to Beth. Fanfictions may depict how he matures over time. Also, the relationship between Puck and Beth's mother can be a theme. It might explore how they co - parent or if there are any romantic feelings still there. Sometimes, the theme of acceptance is present, like how the other Glee club members accept Puck's new role as a father.
One common theme is friendship. Since Will is a teacher and Finn is a student, their relationship can be explored in terms of mentorship and friendship. Another theme could be their shared love for music within the Glee club setting.
A theme that often shows up is self - discovery. Mercedes and Puck are both complex characters. In fanfiction, they might go on individual journeys of self - discovery, and their relationship could play a part in that. For example, Puck might learn more about his sensitive side through his interactions with Mercedes, and Mercedes could gain more confidence in herself and her talent because of Puck's belief in her.
Another theme is redemption. Puck has had his share of missteps in the past, and in fanfiction, there's often a story of him redeeming himself in the eyes of Quinn and Beth. It's about him becoming a better person and father.
One common theme is friendship development. Since they have different personalities in the show, fanfiction often focuses on how they overcome their differences to become friends. Another theme is support. They might support each other through things like auditions or dealing with mean classmates.
One common theme is self - discovery. Finn and Emma are both characters with their own insecurities and issues, and a lot of fanfictions explore how they grow and learn more about themselves through their relationship.
One common theme is friendship. Quinn and Finn have a complex relationship on the show, and in fanfiction, it's often explored in terms of a deepening friendship. Another theme is self - discovery. They both go through a lot of personal growth in the series, and fanfiction continues this journey, like how Finn discovers his true passion outside of football or Quinn finding her place outside of the Cheerios.
One popular glee finn and puck fanfiction is 'The Unlikely Bond'. It explores their friendship in a really interesting way, showing how they support each other through different challenges in the Glee club. Another great one is 'Changing Tides' which delves into their relationship and how they grow as individuals while also being there for one another.