COO is probably coming on their own, they live in the PNW area, and they were at Sakura Con, so they know about Kumori Con. If you really want to know if they're coming, you could always e-mail them and ask, their e-mail address is on the 2nd Anime Jackass DVD. ^.^;
I'm not sure if I relish the prospect of stray tentacles wandering around the Con at odd hours of the nights though... ^.^;