Survivor encounters

In Dead Equestria, the protagonists would come across survivors, who are mostly classified as Extras. Most of the survivors are killed or turned into a Feral.

Some survivors are already mentally unstable due to shock, fear, disbelief, the death of someone they care, or/and simply becuase of the outbreak.

Pre-Apocalypse
Almost nothing is known about the survivors, but they are either ponies, or any other intelligent creatures who are going up with their lives.

Post-Apocalypse
In The Coming Storm, Thunderlane heard voices outside. He peek through a window to investigate and saw Unnamed Unicorn Mare #1, arguing with Unnamed Earth Pony Mare #2, who is trying to convince her telling the others what was going on. The argument end up with Unnamed Unicorn Mare #1, dragging Unnamed Earth Pony Mare #1 using her magic. Their fates are unknown.

In Night Invasion, Blue heard a commotion outside. She came out to see Unnamed Earth Pony Mare #3, attacked by Feral. Blue carried the survive inside Thunderlane's house, but she was already bitten. She later succumbed to her injuries and reanimated.

In Priorities, Thunderlane witness Unnamed Pegasus Mare #2, fleeing from Ferals on the streets.

In Horrors of Reality, Unnamed Earth Pony Stallion #1 rushes out of his house pursued by three Ferals. Thunderlane and Amethyst witnessed his demise after he was cornered, and quickly overwhelmed by a group of Ferals.