(I can not write the speech of the house-elves in the same way J.K. Rowling does. I'm sorry if this seems overly incorrect to some people.)
Kreacher at Hogwarts
Kreacher hated his time at Hogwarts in the beginning. He was away from his beloved Mistress and the house he loved so much. Here at Hogwarts among the blood traitors and mudbloods he was forced to feed them their meals and clean their messes. His Mistress would be so ashamed.
He didn't like the other elves either. That Dobby he was always talking about his new Master, Harry Potter, as if he was some kind of hero. The one who made the Dark Lord disappear. Kreacher wondered how he did it. Then there was Winky. She was always drinking her butterbeer and trying to hide the bottles. She was always up to no good that one. His mistress would be so disappointed in him. He brought shame to the most noble house of Black.
Then after a year of service at Hogwarts his Master called him home. He was overjoyed to be back! His Master was asking about the locket. Should he tell them Master Regulus' secret? What to do? Master would have to be told.
The Master sent him on a mission and entrusted him with Master Regulus' locket. Perhaps the master, the blood traitor, and mudblood weren't so bad. He would see when he brought back the foul vermin who robbed his Mistress. They were trying to finish Master Regulus' work.
He couldn't think of them as he had before. Master Harry was all the Dobby claimed. Mister Ron and Miss Hermione weren't too bad either but not so good as his Master.
Kreacher now enjoyed working for them. He made them nourishing meals and cleaned the noble house of Black and Potter until it shown. They had left in the morning on a most important mission but they didn't return. Kreacher was worried. It was taking too long. The job was too dangerous.
People were searching the house. People who were not invited by Master Harry. They were looking for him. Kreacher hid himself until he was sure all was safe. He didn't know what to do. He would return to Hogwarts and wait for news. Maybe the house elf Dobby knew something. It was too late! Kreacher was found by the bad men. They tortured him until he could stand it no more. He didn't know where Master Harry Potter was. He didn't know! He told them again and again. Never would they believe him. The pain was so great to Kreacher he would just go to sleep and not wake up.
They left him on the floor in the kitchens. They thought he was dead. Kreacher would get up and go to Hogwarts. He would wait for Master there.
He waited and waited but Harry Potter never came.
Dobby said Harry Potter would come.
Winky said Harry Potter would come.
Kreacher said Harry Potter would come.
One night Kreacher went to search the castle for Harry Potter. Maybe he was under his cloak. When he came back to the kitchens Winky was crying. Dobby was gone. Gone to help Harry Potter! Kreacher told her not to worry. Dobby would come back and bring Harry Potter and they would all be saved from this evil.
But Dobby never came back.
They waited days and days but still he never came.
Kreacher and Winky never gave up hope. The other house-elves were surprised by this. A free elf and a bound elf believed in Harry Potter. None of them ever said it aloud but many started waiting for Harry Potter too.
They would fight!
They were the house-elves of Hogwart's School of Witchcraft and Wizardry and they would FIGHT!
Winky and Kreacher started to make a plan. The other elves all listened.
When the war came to Hogwart's, Kreacher rallied the elves. Brandishing a meat cleaver he would gather the elves who wanted and fight. Most of the elves were scared but not Winky. Winky grabbed a long sharp carving knife and stood beside Kreacher. She had a ferocious gleam in her eyes. He smiled at her and she smiled back.
"For Harry Potter and Master Regulus! Follow me!" Kreacher cried ready for battle.
Winky stayed right by his side during the fight with spells flying everywhere and wizard's and elves failing all around them, Winky stayed by his side.
Harry Potter had fought and defeated the Dark Lord. Many people had helped him but Kreacher was especially proud of his army of house elves. They had all fought. Not one had remained behind.
Many great witches and wizards had died and some elves. Many were also injured. Kreacher and Winky were helping the injured. Madam Pomfrey told them how to help the injured. Kreacher was looking but he could not find Harry Potter. Then he saw him come out of the Headmaster's tower.
"Master you need to be looked at. You have cuts and scrapes, and bruises. You should be seen by Madam Pomfrey." Kreacher told him.
"No, right now I am just going to rest. I am so tired. You did well today Kreacher. I saw you lead the house-elves out of the kitchens. I think Master Regulus would be proud."
Yes his Master was a kind man. Kreacher was very fond of him.
"You go get some rest Master. I will bring you some food in your room. Go and rest."
Harry Potter smiled at him. So did Miss Hermione and Mister Ron. Mister Ron's little sister was there too. She looked tired as well. They were all sad, he knew, because their friends and family had died for the cause.
"All of you go and rest in the Gryffindor tower. I will bring sandwiches and some butterbeer." Then Kreacher hurried off into the kitchens.
Winky asked Kreacher where he was going and he told her. She looked around the Great Hall and then went to and spoke to Mister Ron's mother and father. The woman nodded at what Winky said.
Winky came back to Kreacher and told him, "Mrs. Weasley is sending her other children to the tower as well. I told them to get rest. We will go with the other uninjured house-elves and help you prepare the food. Everyone will be tired and want to eat. Everyone will have to stay in the Gryffindor tower anyway. I heard them say that the Slytherin rooms are flooded and Ravenclaw and Hufflepuff are too damaged to stay in tonight. Mrs. Weasley is going to send all the young people to Gryffindor tower now."
Winky went around to all the house-elves and asked for help in the kitchen if they were feeling up to it. A strange feeling came over Kreacher.
He felt tired.
He felt weak.
He was concerned for his Master, but that was not it.
This feeling was different. It made him feel warm inside. Warm and very strong. Kreacher didn't know what it was.
He had work to do.
He set off to wait for Winky in the kitchens.
