Downpour was a minor character in Source:MLP. He was a pegasus stallion and member of the Equestrian military during the Second Era. He volunteered to be part of Project Tolerance. He and the other volunteers were attending a seminar in the Department of Life facility in Vanhoover when the city was struck with a Hoarfrost missle, and he was chosen by Fluttershy to occupy the pegasus capsule in the cloning machine.

Downpour was Thunderlane's son, and Rumble's nephew.

His young age at the time of his stasis commencement is the reason all Pegasi Deadlander clones retain, as noted by Lozenge and company, "even in advanced age; an air of disturbing adolescence".