- Gaster!Sans may be the first and only one to appear on both AUs.
- Gaster!Sans tends to be seductive, and likes to toy with Echo!frisk, doing things the usual sans would do.
- He smokes, but only does it because he thinks it cool
- He's acoholic drinker, drunk mostly of the time
- there is no backstory WHATSOEVER.
- that last part was totally trivia :3