Caroline would probably be overjoyed and very helpful. She might offer to babysit all the time and give parenting advice based on her own experiences or what she's read. Damon, on the other hand, might be a bit more cynical at first, but eventually grow to love the baby and become very protective.
Stefan might be initially shocked but then be very supportive. He would probably offer to help in any way he can, like babysitting or giving advice based on his own experiences. Bonnie would be excited and use her magic to create some special things for the baby, like a protective charm.
Elena would likely be angry. She has her own agency and doesn't like being controlled. If Stefan kidnapped her, she would fight back. She might use her knowledge of the supernatural world and her relationships with other characters to try to escape. For example, she could try to call out to Damon telepathically if they have some sort of connection in the story.
Their friends would probably be very surprised at first. Annabeth, for instance, might be a bit skeptical at first but would soon come around to offer help and support. Grover would be excited and might offer to be the baby's protector, using his nature - related skills.
Thea would be over the moon for Oliver. She'd be excited to be an aunt and would start planning all kinds of family - oriented activities. She'd also be a bit protective of the baby already. For Kara's friends, James would be happy for her but also a bit concerned about how the public would react to a superhero having a baby. He'd worry about the media attention and how it could put the baby in danger. Maggie would be very supportive of Kara. She'd offer practical advice on things like maternity leave and how to handle the changes in Kara's life. She'd also be ready to step in and help with any legal or security issues that might come up.
Well, their friends' reactions could be mixed. Some might be overjoyed and immediately start planning parties and celebrations for the new baby. Others, especially those who are more cautious, might worry about the implications. How will the baby affect their group dynamics? Will it be safe? But overall, most of their friends would come around and be there for Donnie and April during this new chapter of their lives.
The Salvatore brothers might be a bit protective at first. Damon would probably be skeptical about Kol being in the picture, but over time he'd warm up to the idea for Elena's sake. Stefan would be more accepting right away and offer his support. Bonnie would be excited and use her magic to make sure the baby is safe. Caroline would be all over helping with baby clothes and advice. As for the Mikaelson family, Klaus might see the baby as a way to strengthen his family's hold in the supernatural world, but also be protective in his own way.
Caroline would probably be really happy. She's always been a big supporter of Stefan and Elena's relationship. She'd be the one planning get - togethers and trying to make sure they have time alone to reconnect.
Caroline would probably be very shocked at first. She might have some concerns about Kol's intentions, but seeing how much he loves Elena and how excited they are about the baby, she would gradually come around. Stefan would be more reserved in his reaction. He would be worried about Elena getting hurt, but he would also respect her decision. Damon, on the other hand, would be more vocal. He might make some snide remarks at first, but deep down he would also want Elena to be happy. Bonnie would be practical. She would offer to use her magic to make sure Elena has a safe pregnancy and that the baby is healthy.
Damon might initially be shocked and angry. He has always had feelings for Elena, and seeing Stefan marry both her and Caroline could make him feel betrayed. He might lash out and try to cause trouble for their relationship at first.
Stefan would be extremely worried and angry. As Elena's other love interest, he has a deep connection with her. He would immediately start looking for her, using all his vampire skills and resources. He would probably suspect Damon right away, given their history of rivalry over Elena.