Given that I have no knowledge of the 'John I Leonard horror stories', it's difficult to determine the exact common themes. However, in horror literature, themes related to revenge can be prevalent. A character seeking vengeance from beyond the grave or in a more earthly but still menacing way can add a lot of horror elements. Also, themes around the corruption of the human soul or body can be quite common, where something normal turns into something truly horrifying.
As I'm not acquainted with these 'John I Leonard horror stories', we can only speculate. Maybe they follow the common horror themes such as isolation. When a character is alone, it often creates a sense of unease and is a great setup for horror. Another possible theme could be the breakdown of reality, which can be really terrifying as it makes the reader or listener question what is real.
Since I don't know the specific 'John I Leonard horror stories', it's hard to say the common themes. But generally in horror stories, themes like fear of the unknown, death, and the supernatural are common.
I'm not specifically familiar with 'John I Leonard horror stories'. It could be some local or personal horror tales associated with someone named John I Leonard. Maybe it's a collection created by him or stories that happened in a place named after him.
One common theme is their relationship growth. Fanfictions often explore how they develop from just dating to a more committed relationship. Another theme is their interactions with friends. Since they are part of a group, how their relationship affects and is affected by their friends is often a focus.
Another theme is friendship or begrudging respect. Since they are from different 'sides' initially (Barry as a hero and Leonard as a villain or anti - hero), stories often explore how they come to see value in each other. For example, they might start off as enemies but end up as allies, and the journey of how that happens is a common theme. It can involve things like Leonard using his skills to help Barry in a tricky situation and Barry showing Leonard there is more to heroism than he thought.
Themes like roommate drama are quite common. There could be conflicts over things like sharing the apartment space or who gets to use the TV at a certain time. Also, there are fanfictions that focus on how they support each other in their careers. For instance, Leonard helping Sheldon with a big research project or vice versa.
One common theme is redemption. Many fanfictions explore how an OC can influence Leonard Snart's path towards redemption, especially considering his complex character in the original shows. For example, an OC might be the catalyst for him to turn away from his more villainous ways.
One common theme could be Leonard's role in the Angry Birds - Pigs conflict. Maybe stories explore his attempts to outwit the birds or his relationships with other pigs.
A common theme is the exploration of her relationships. Since Leonard Snart is a complex character, when written as female, her interactions with other characters, such as romantic relationships with teammates or rivalries, are often explored. For example, a relationship with Sara Lance could be a central theme.
The theme of self - discovery is also quite common in female Leonard McCoy fanfiction. She may be on a journey to understand herself better, especially in relation to her role on the Enterprise. This could involve her coming to terms with her emotions, her capabilities, and her place among the crew. Additionally, stories might explore her role in diplomatic situations where her medical knowledge gives her unique insights.
One common theme is the couple's relationship growth. Pregnancy often brings a new level of closeness and understanding between them. They might have deeper conversations about their future as a family.
A typical theme would be the support system around them. Their friends would play a big role in this fanfiction. For example, Sheldon might struggle with the idea of there being a baby in his close - knit group but still end up being surprisingly helpful. And the theme of family could be explored, not just the family they are creating but also their extended families. Maybe Penny's family has some old - fashioned ideas about pregnancy and child - rearing that conflict with what she and Leonard want, leading to some interesting plot twists.