- Italics are headcanons from the design's creator.
- 317 is an inventor ever since he was a little kid.
- After failing to create his 'friend' when he was 12, he tries to create him by the time he turns 17 and succeeds and named his friend "Curry".
- The bags on his sash are spare bolts and screws or used batteries he can feed Curry with.
- Curry is a mecha bug who is 317's closest friend.