Sirius Black, Lucius Malfoy, Peter Pettigrew, Augustus Rookwood, Severus Snape, and many many more.

1979
A prophecy is foretold: The one with the power to vanquish the Dark Lord approaches...Born to those who have thrice defied him, born as the seventh month dies...And the Dark Lord will mark him as his equal, but he will have power the Dark Lord knows not....

1981
Lord Voldemort attempted to attack Godric's Hollow to prevent the prophecy from being fulfilled; but, when the Order was tipped off about his plan, they were able to warn the Potters before Lord Voldemort could get to them. Instead, Lord Voldemort found himself face to face with Albus Dumbledore when he arrived at the village. Lord Voldemort, refusing to lose, lashed out with a violent curse that severely wounded both himself and Dumbledore. But when the attack did not kill the older wizard, the weakened Dark Lord ordered a mysterious lurker to finish off Dumbledore.

With Albus Dumbledore gone, the Wizarding World waited with baited breath for Lord Voldemort to rise to power. Months passed and there was no sign of the Dark Lord's return. Rumors of his death spread like a wildfire and many attempted to gain back what they had lost to fear. Only the Order of the Phoenix remained suspicious and vigilant.

1983
Many have started to regain the lost normalcy in their lives. Nevertheless, unbeknownst to the peace-seeking Wizarding World, a devious plot has been set into motion; one that will tear down the foundation of Wizardry and bring about the second war.