The obvious antagonists would be the Death Eaters. They are always up for causing chaos and harm. If Voldemort has a particular interest in Amelia Bones, perhaps because of her knowledge or position in the wizarding world, he would send his loyal Death Eaters to capture her. Another possibility could be some rogue dark wizards who are trying to gain power and see Amelia as an obstacle.
Definitely the Death Eaters. They are the main followers of Voldemort and would be likely to target Amelia Bones. In addition, there could be some corrupt Ministry of Magic officials who are secretly in league with the Dark Side. They might want to get rid of Amelia because she is a strong advocate for justice. So, in the fanfiction, Harry would not only have to deal with the Death Eaters but also these corrupt officials while rescuing Amelia.
The main antagonists would be the Death Eaters for sure. However, there could also be some dark magical creatures that are being controlled by the Dark Arts. Maybe some Inferi are sent to capture Amelia Bones. Harry would have to use his skills to not only fight off the Death Eaters but also these terrifying Inferi. And perhaps there are some witches or wizards who have been bribed by the Dark Side to help in the capture of Amelia, and Harry has to expose and defeat them too.
Chapter 130, "The New Deceitful Monster", is the clearest early answer because it turns Xia Hong's situation into a concrete plot event. A useful checkpoint is the way the scene starts with That scream was so shrill it startled many people outside the cabin. and follows through with I'll need to find a way to break through first!. By the close, According to He Meng's style, the Mirror Immortal Camp will likely..., and the chapter closes with "To counter soldiers with generals, water with soil.
Chapter 120, "Rat Swarm Unrest, Mad Bow Making [Large Chapter]", is the clearest early answer because the buildup finally cashes out in a real clash. The chapter turns that into something concrete by moving from Several questions popped up in Xia Hong's mind in quick succession,... to Alright, pack it up, go back to the previous location, bring the....
Chapter 121, "Everything is Ready, Let's Get Started [Three in One]", is the clearest early answer because it turns Chewing Teeth Chisel's situation into a concrete plot event. The chapter turns that into something concrete by moving from By calculating, it's clear that during this period, both their bodies... to Every other day, he would go to the North Slope of the mountain wall....
Chapter 4, ", Golden Finger Arrives [Please Favourite and Follow!]", is the clearest early answer because it pushes Xia Ding into a new phase or setting. The chapter turns that into something concrete by moving from Xia Hong gave Xia Chuan a glance and quietly handed him a hand axe. to That Xia Ding was running in the opposite direction of your camp....
Chapter 445, "He'll Have To Catch Me First", is the clearest early answer because it turns Apnoch's situation into a concrete plot event. Early on, The night was still young in Delwig when Captain Apnoch finally found.... By the end, And once you hear it, you won't be able to forget." "Then curse me,"....
Chapter 472, "Galandra Is Yours", is the clearest early answer because it turns Damien's situation into a concrete plot event. The chapter turns that into something concrete by moving from Damien had grown used to eyes following him wherever he went, but... to What," he said flatly, "have you brought into my office?" Haldric....
Chapter 131, "The Entire Hunting Team Breaks Through", is the clearest early answer because it turns Blacksmith Room's situation into a concrete plot event. The setup is The panic brought by the Deceitful Monster visibly spread throughout..., but the pressure keeps building through Even knowing that the surrounding valleys are guarded by Coagulated....
Chapter 82, "Whether I Can Do It or Not Is My Business", is the clearest early answer because it turns Great Xia Camp's situation into a concrete plot event. The setup is Leader, the number of people has been counted., but the pressure keeps building through In total, 39 people died just now, including two from the Logging....
Chapter 1, ", The World in the Grip of Winter [Please Add to Favorites!]", is the clearest early answer because it turns Cold Beasts's situation into a concrete plot event. The chapter gives readers a real answer by opening on The cold wind raged, and snow filled the sky. and ending on Because, before crossing, he was a patient with ALS..
Chapter 510, "Are My Blows Really That Heavy?", is the clearest early answer because it turns Damien's situation into a concrete plot event. The chapter gives readers a real answer by opening on Pain became the rhythm of the fight. and ending on That's the trick." The demon snarled and charged again, furious now..