These are the season oblivion charries. All of them were born on their season, and infected by the machine in a year's time then joined in SS's facility branch. they are all half robotic. Space for next one
Spring: She was a robin looking for food, but she accidentally picked up a part of the machine and was infected in spring, and became a machine robin, then was led to SS's branch. Summer: Summer was relaxing in the summer when she was attacked by zombies. She almost got killed, but she was accidentally shot with an infection gun and was turned into part robotic. She found that she could reflect flames with her translucent wings and went to SS's branch. Fall: Fall was a normal eagle with powerful talons when she was fishing and caught and ate one with a weak metal infection and became half metal. SS found her and she stayed at the branch. Winter: A wise owl, winter used to be a normal snowy owl. But when she started investigating the machine, she was accidentally too close and turned robotic with some unidentified reasons.