Identity is a theme that often shows up. Characters in these crossovers may struggle with their identity as they are exposed to new cultures and ways of life. A Shadowhunter might question their role and beliefs when faced with the different values and powers in another world. This theme adds depth to the characters and makes the story more than just a simple crossover of action and adventure.
Love and relationships are also a big theme. When different universes collide in these crossovers, new love interests can be formed. It might be between a Shadowhunter and a character from another world, and this creates all kinds of drama and tension. It's not just about romantic love, but also friendship and loyalty among characters from different backgrounds. Another common theme is the fight against a common evil. Characters from different worlds might have to team up to defeat a powerful foe that threatens both of their universes.
Another theme is the discovery of new powers and abilities. When the characters from the two universes meet, they might learn new things about their own powers or discover new abilities altogether. Like a Shadowhunter might learn some unique ways of banishing spirits from the Winchester brothers. This theme of self - discovery through interaction with a different world is quite prevalent.
One main theme is the clash of different belief systems. Lucifer represents a very different view of good and evil compared to the Shadowhunters. Another theme is power dynamics. The powers that Lucifer has and the powers of the Shadowhunters are very different, and when they come together, there's a lot to explore about who has more power in different situations.
Love is a very common theme. Since Clace is a couple, their relationship and the challenges it faces are often explored. Another theme is adventure. They are Shadowhunters, so they often go on quests and fight against demons.
One common theme is love. Magnus' relationships, especially with Alec, are often explored. Another is power. His magical powers and how they are perceived by the Shadowhunters are frequently a part of the stories. Also, acceptance. Magnus being a Downworlder, his fight for acceptance among the Shadowhunters and the mortal world is a common theme.
Friendship is another big theme. Characters from both universes form new friendships. In many fanfics, you'll see Kurt from Glee becoming friends with Alec from Shadowhunters. They learn from each other's strengths and weaknesses.
One common theme is identity. Simon becoming a vampire changes a lot for him, and many fanfictions explore how he comes to terms with this new identity. Another theme is love and relationships. His relationships with other characters, especially romantic ones, are often explored.
The theme of self - discovery is also quite prevalent. When a character travels through time in these fanfictions, they often learn more about themselves, their family's history, and their place in the Shadowhunter world. For example, a character might find out a long - lost family secret while in the past. And of course, there's the theme of adventure. Time travel itself is an adventure, and these stories are filled with exciting chases, battles in different time periods, and encounters with strange creatures or magic from different eras.
One common theme is self - discovery. The male oc often has to figure out who he really is, especially in relation to his new life as a shadowhunter. Another theme is friendship. They form bonds with other shadowhunters and these relationships are crucial to their development. And of course, there's often the theme of fighting against evil. The male oc joins in the battle against demons and other dark forces.
One major theme is the struggle between good and evil within Clary herself. She's torn between her normal self and the dark influence of Lilith. Also, the theme of loyalty comes up a lot. We see how Clary's loyalty to her friends and the Shadowhunter cause is tested as she gets involved with Lilith.
One common theme is acceptance. Alec has to come to terms with his feelings for Magnus in a world that may not always be accepting, and Magnus has to accept Alec's insecurities and growth. Another theme is sacrifice. They often have to sacrifice personal desires for the greater good of their relationship and the Shadowhunters world.