Questions for The OCs (aka my kids)

Fnaf OC question 4 - who or what is their enemy how are they affecting them

Eric Schmidt - my baby went through so much trauma and him losing his family, including his brother Gabriel's  death has screwed his life and destroyed him. William Afton is his enemy and it is affecting him dearly due to him knowing that William murdered Gabriel in 19xx at the age of 16, right in front of him when Eric was in the back room looking for spare parts for the animatronic bear, named freddy, it was the event when William lure kids in the back and locked the door behind him, Eric didn't react to see William luring the kids so he just hid behind the boxes and when he did...he wished he sees it coming and save his brother but it was already too late... he saw the slaughter and it destroyed him, hearing their screams and Gabriel crying out for Eric but Eric was stunned.

After it was over  and William left, Eric felt horrified, blame and betrayed... William, the only dad he had look up to and have in his life is a monster, a murderer and evil. Eric lost his brother Gabriel and it destroyed him til this day and the guy he came to be...he blamed himself for Gabriel's death and wish he could be there to stop him but it was too late. Eric swore to Gabriel that he will end William and bring Gabriel to justice..til this day he still kept it, he just need to find William... the rabbit demon in his dreams was his constant reminder of his regrets and traumatizing memory... he need to finish this once and for all.

For Serena, I don't think she has enemies... but if she does, I'd say her wife Vanessa because Serena finally knows the truth of the nine missing children went missing in the mega pizza plex and it was connecting to Vanessa and her costume she wears an doesn't want Serena to look in, she finally knew why and who she really is. During Gregory's night at the pizza plex Serena would help Gregory plan to escape but at the final act she would confront Vanessa/Vanny about the murderers.serena would feel betrayed but love Vanessa at the same time she hate to do this but for safety she has no choice but to arrest her wife.
(This goes in alternate endings. 1: she would find away to break Williams mind control and free her wife, 2, as Serena confronts Vanessa/vanny will chase Serena and try to kill her cause Serena knew the truth and vanny will have no witnesses. Or 3 Serena will risk saving Vanessa but will most likely in William's control in ruin...

I don't know but hopefully...