A group of outlaws that are neither on the side of the Evil Queen nor the good guys could be the main antagonists. They see Snow White as a valuable asset to ransom off to the highest bidder. The Huntsman has to fight against them to keep Snow White safe. They are brutal and not afraid to use any means necessary to get what they want.
A powerful dark wizard from another land could be the main antagonist. He could be after Snow White for some unknown but dark purpose. Maybe he wants to use her pure heart to power a spell that will give him ultimate control over all the kingdoms. And he could be the one who has also wronged the Huntsman in the past, so the Huntsman has a personal vendetta against him as well.
An ancient, malevolent spirit that has been awakened by the chaos caused by the Evil Queen. It decides that Snow White's beauty and the Huntsman's strength are a threat to its plans of spreading darkness across the land. So it starts to target them, using its otherworldly powers to create all sorts of obstacles and nightmares for them to face.
A new dark wizard or witch could be created specifically for this fanfiction. This character could be interested in using the Huntsman's skills for their own evil purposes. If the Huntsman refuses, they become enemies. This antagonist could have powers related to dark forest magic, something that the Huntsman is familiar with but in a more malevolent form.
It could be a powerful and mysterious figure from the shadows. Maybe a rogue huntsman gone bad who has his own agenda against the lone huntsman. This antagonist might have a vendetta for some past event.
In the fanfiction, their relationship could develop through a series of shared adventures. For example, they might be forced to team up against a greater evil, like an ancient dark force that threatens their kingdom. During this time, they start to understand each other better.
One idea could be that the Huntsman is from a different realm in the fanfiction. He has unique powers from that realm which he uses to protect Snow White in new and unexpected ways. For example, he can communicate with magical creatures that are native to his home realm and they help him in battles against the Evil Queen.
An alternate ending could be that the Huntsman sacrifices himself to save Snow White. He could step in front of a fatal blow meant for her, and in his dying moments, Snow White realizes just how much he means to her. This would be a tragic yet powerful ending, showing the depth of their connection.
If there was a lemon fanfiction of 'Snow White and the Huntsman', it might take the form of a re - imagining of their story with a stronger focus on their physical and emotional attraction. It could be a story that dives deeper into the unspoken tension between them. Instead of just the typical adventure and power struggle against the Evil Queen, their relationship could be at the forefront, with new situations and challenges arising from their budding and perhaps more 'spicy' connection.
A power - hungry noble could be the main antagonist. This person might be jealous of the Queen's position and wants to overthrow her, and sees Harry as an obstacle in his way.
Snow White is central to the story. She is the target of the queen's envy. The Huntsman is an important character as well. He has skills in hunting and survival, which he uses to help Snow White. The evil queen is another main character. She has powerful magic and is willing to do anything to stay in power and get rid of Snow White. In the 'Winter War' part, there may be other characters like Snow White's allies, perhaps some brave soldiers or magical creatures who join her fight against the queen's forces.
One main theme is the battle between good and evil. Snow White represents good, while the evil queen is the antagonist. Another theme could be self - discovery. As Snow White embarks on her journey, she discovers her own strength and power.
First, it's important to note that if by 'lemon' you mean something with adult or inappropriate content, that's not advisable as it goes against many ethical and community standards. But if you mean a more 'flavorful' and unique take on the relationship between Snow White and the Huntsman, start with a deep understanding of their characters from the original story. Think about what could have been different in their interactions. For example, you could add more scenes of them alone, talking about their hopes and fears which could lead to a deeper emotional bond.