|The following is based on Fallout Shelter and some details might contradict canon.|
Raiders are hostile characters found in Fallout Shelter.
Raiders will randomly attack the vault. Once they have opened the door by shooting at it they will move through the rooms and briefly combat any vault dwellers they encounter. During their time in the vault they will drain some resources, which will flash red to indicate they are being stolen.
- Raiders usually strike in three but their numbers increase depending on how many Caps you have.
- On rare occasions if the player has the HD Zoom Out on, they will see a dead raider outside the door.
- On rare occasions the raiders will endlessly attack the vault door for no reason