Common themes revolve around his insecurities. As a young werewolf, he has a lot of insecurities which are often explored in fanfiction. His place in the pack is another theme. Is he an outcast? Or is he a key member? How he proves himself within the pack is often written about. And the theme of facing danger together with the pack, like fighting against other supernatural threats, is also quite common.
One common theme is the struggle with his werewolf nature. For example, he might get hurt while trying to control his transformations, especially in difficult situations like during a full moon. Another theme could be him getting injured while protecting his friends or pack members. This shows his loyalty and the risks he's willing to take for those he cares about.
One common theme is innocence. Since it's about baby Liam, his pure and innocent nature is often highlighted. Another theme is protection. Other characters in the fanfics usually feel very protective of the baby Liam.
One great 'liam dunbar oc fanfiction' is 'Liam's New Beginning'. It has an interesting original character who helps Liam deal with his werewolf issues in a unique way. The story is well - paced and the interactions between the OC and Liam are very engaging.
Well, it could be that Liam is kidnapped by a rival pack who wants to use him to get information about his own pack. Maybe they think he's a weak link and can be easily manipulated.
It could be another werewolf from a different pack. There are often rivalries between packs in the Teen Wolf universe, and someone might see Liam as a way to gain an advantage over his pack.
Well, I really liked 'Liam Dunbar: The Lost Years'. It's a fanfiction that fills in the gaps of Liam's past, giving more depth to his character. 'Liam in the Parallel World' is also quite fascinating. It imagines Liam in a different world with different challenges. Then there's 'Liam and the Forbidden Friendship' which shows his relationship with an unlikely character in an interesting way.
Family drama also plays a part. Given their family backgrounds in the original, fanfictions often incorporate how their families' actions impact their relationship. For example, family secrets being revealed and how Fallon and Liam handle it together can be a central part of the story. This adds more complexity to their relationship and makes the fanfiction more interesting.
One common theme is forgiveness. Often in these fanfictions, they have to forgive each other for past mistakes. Redemption is also a theme. Maybe one of them has made a big mistake and is trying to redeem themselves in the eyes of the other. And of course, there's the theme of loyalty. Are they loyal to each other or will outside factors make them waver?
One common theme is redemption. Theo has a complex past, and many fanfictions focus on him trying to redeem himself in Liam's eyes and in the eyes of the pack. For example, he might save Liam from a dangerous situation, which is a step towards his redemption.
Fanfiction.net is also a good place. Just type in 'liam dunbar oc' in the search bar. You might have to dig a bit deeper compared to AO3, but there are still some hidden gems there. Some authors post their works exclusively on this site.