* Dumbledore: After his death, Harry and his friends learn about the Horcruxes and that Dumbledore had planned for them to be destroyed. They also find out that he had arranged for his own death, as he knew it was necessary to defeat Voldemort. While he doesn't physically come back to life, he does reappear to Harry as a spirit, offering guidance and support.
* Fred Weasley: While Fred Weasley dies in the Battle of Hogwarts, he does return to life as a ghost. He is seen by his brother George, bringing comfort and a reminder that he is still with them.
* Other Ghosts: It's likely that many other ghosts of Hogwarts students and staff return to life after the Battle of Hogwarts, as the school is now free from Voldemort's influence.
It's important to note that the "return to life" in these cases is not a complete resurrection but a spiritual form of existence.