Try Reddit as well. There are subreddits dedicated to Teen Wolf. You can post a request asking for Lydia Sisyet OC fanfics, and chances are, some fellow fans will point you in the right direction. Additionally, you could follow some Teen Wolf fanfic writers on Twitter. They often promote their works, and you might come across the type of fanfic you're looking for.
One common theme is friendship. Lydia and the OC Sisyet might form a strong bond, either through facing the supernatural threats in Beacon Hills together or just by being classmates. Another theme could be love and romance, perhaps Sisyet has a secret crush on Lydia or vice versa.
There's also 'The Lone Male Oc'. In this fanfic, the male oc has a unique backstory that sets him apart from the other characters. He has to navigate the dangerous world of Teen Wolf while also dealing with his own personal issues. It's really engaging as it shows his growth throughout the story.
A must - read 'Teen Wolf Wolf OC Fanfiction' is 'The Wolf OC's Alliance'. This story focuses on the OC forming an unexpected alliance. It's a great read because it shows how the OC can change the power dynamics in the Teen Wolf world. The relationships developed in this fanfiction are complex and engaging.
Another plotline could be the male oc having a special power that others don't. This power might attract the attention of both good and bad forces in the Teen Wolf world. For instance, he could have the power to control the elements, and different factions would either want to use him or destroy him. This leads to a lot of action - packed sequences.
There are many good ones. For example, some fanfictions center around an OC who is a long - lost relative of one of the main characters. This OC brings new dynamics to the group. Then there are those where the OC is an outcast from another pack and has to find a place in Beacon Hills. These types of stories often explore themes of acceptance and self - discovery within the context of the Teen Wolf universe. Also, fanfictions that involve an OC with a prophecy related to them can be really interesting as it adds an extra layer of mystery and adventure.
One great 'oc teen wolf fanfiction' story is 'The New Wolf in Town'. It has an interesting original character who brings a fresh dynamic to the pack. The plot is engaging as the oc tries to fit into the complex world of Beacon Hills.
The integration with the existing Teen Wolf world is crucial. The fanfiction should feel like it belongs in the same universe. This means referencing the right locations in Beacon Hills, the existing characters like Derek Hale and Stiles Stilinski, and the rules of the supernatural world in the show. If the werebear's presence disrupts the established order in a believable way, it makes for a great story.
Secondly, integrate your OC well into the Teen Wolf universe. Use the existing characters and settings. Maybe your OC joins Scott's pack and has to learn their ways. You can also create new conflicts related to the OC, such as an old enemy from their past coming to Beacon Hills.
One idea could be a new banshee oc who discovers her powers during a full moon and has to deal with the chaos in Beacon Hills. She could befriend Scott and his pack and use her unique abilities to help them fight off new threats.
You can also make her powers different in some way. Instead of just screaming when she senses death, she could also create a sort of sonic shield to protect herself and others. Her connection to the spirit world could be stronger too. She might be able to communicate with the dead more directly, not just sense their presence. And for her character arc, she could start off as someone who is afraid of her powers but over time, she learns to master them and use them for good.