7

7 is a former owner of the Cafe and Diner, after 6|Margaret and before Single Digit.

General Information
In the RSVP PrivateBin, Single Digit says that they met with 7, who warned them that the recent blood moon had a negative effect on boundary lines (areas where the veil between the Flip Side and our world is thin), and some friends may have escaped as a result. They also mention that she "(thankfully) wants no part in the Cafe and Diner."

In the same PrivateBin discussion, 11411 decides to look into her background. Single Digit warned him to only do a "surface investigation," saying "no point in poking a sleeping bear."

7 was also discussed during the August 10th Meeting: "Single Digit: I'm more against asking 7 for help [with fixing the Ice Machine than Ex-44]""35: It doesn't seem like 7 can help much anyways. I don't think they even want to help.""Single Digit: She's better off gone, to be honest.""Single Digit: She's what gave CaD a bad name to start with.""35: I suppose we should just leave her be then...""35: She doesn't even want to be around us so why bother?"

Speculation

 * 11411, who is looking into her background, is also the only one who recognized the symbol on the suspicious flyer. It's possible the flyer and 7 are connected.