Harry Potter: 10 Most Powerful Gryffindor Students Ranked
5. Remus Lupin
The third of the Marauders on this list is the only one who took the incredible knowledge he picked up while at Hogwarts and beyond, and returned to the school to pass on what he knew to the next generation of witches and wizards. He was easily Harry's best Defence Against the Dark Arts teacher, and may have been his best teacher altogether.
He taught the Riddikulus charm to his class, but also recognised when Harry was ready to take on more advanced magic in the form of the Patronus Charm. Without Professor Lupin, Harry would never have been able to fend off the Dementors that wanted his soul.
He took these leadership qualities from Hogwarts back to the Order of the Phoenix for the second Wizarding War, leading his troops to victory despite not seeing the final moments himself.
As Sirius was only taken down by someone as skilled with a wand as Bellatrix Lestrange, Remus Lupin fought admirably at the Battle of the Seven Potters, and the Battle of Hogwarts before ultimately being killed by Antonin Dolohov, one of Voldemort's most dangerous followers.