In many Buffy and Angel fanfictions where they have a baby, it often explores new dimensions of their relationship. It could show them dealing with the challenges of parenting while also facing the supernatural threats they are so used to. Maybe the baby has some unique powers that attract both good and bad forces, leading to a whole new set of adventures for Buffy and Angel.
Perhaps the baby could inherit some of Buffy's slayer abilities and Angel's vampire strength. This would make the baby a very powerful and unique being. In the fanfiction, they would have to figure out how to raise and train the baby, while also keeping its existence a secret from the wrong people.
If Buffy decides to tell Angel, their relationship could become more complicated. Angel might feel a sense of responsibility but also be scared. He could be hesitant about getting involved due to his vampire nature.
One possible plot could be that Buffy and Spike initially struggle with the idea of having a baby. They might face challenges from the supernatural community as their relationship was always complex. Their friends could be divided in their reactions, some supportive while others worried about the implications. The baby could inherit unique powers, leading to various adventures as they try to protect it from those who might want to use its powers for evil.
One common theme is love and sacrifice. Since their relationship in the show is complex and full of obstacles, many fanfictions explore how much they are willing to sacrifice for each other. For example, Angel's struggle with his vampire nature and Buffy's duty as the Slayer often lead to situations where they have to make difficult choices for the sake of their love.
One common theme is the love triangle. The complex relationships between Buffy, Spike, and Angel are often explored, with the characters torn between different kinds of love. For example, Buffy's love for both Spike's wildness and Angel's brooding nature.
A common theme is the rekindling of their relationship. Whether it's a romantic or a platonic bond, it often focuses on how they reconnect. Another theme is the fight against a greater evil. Since both are from the Buffyverse which is full of demons and dark forces, this is a natural theme.
One great 'angel and buffy crossover fanfiction' is 'Crossed Paths'. It beautifully weaves their two worlds together, exploring their complex relationship in a new and exciting way. Another one could be 'Reunion' which focuses on how they handle a new threat together after being apart for a while.
Love and sacrifice are common themes. Their relationship has always been about love in different forms and often one has to sacrifice for the other. So in crossovers, this is often explored further.
One common theme could be the struggle of dealing with the unexpected pregnancy. Given their complex relationship and the challenges they face in the Buffyverse, it adds an extra layer of drama. Another might be how their friends and allies react to the news.