The Marauders were a group of four Gryffindors and classmates: Remus Lupin, Peter Pettigrew, Sirius Black, and James Potter. The four attended Hogwarts School of Witchcraft and Wizardry from 1971-1978. They had a knack for rule-breaking and mischief-making. While at Hogwarts they also created the Marauder's Map, which continues to help future generations of mischief-makers.
The Marauders would all go on to fight in the First Wizarding War and some in the second. They were also participants in the original Order of the Phoenix, an organisation lead by Albus Dumbledore in the struggle against the Dark Lord, Voldemort.
All of the Marauders died whilst protecting Harry Potter from Voldemort or his Death Eaters, including Peter Pettigrew. Peter did not kill Harry because of a life debt he owed him. As a result, Harry was able to escape and he and his friends were saved from further torture.
