The demon in panel 4 is an Eristrufa a 3rd circle demon of Kimberian decent. They are kind of nightmarish things of mist, fog, and "nightmarish tentacles". You can get their full game stats on pages 132 and 133 of the Compass of Terrestrial Directions, Vol. II The West.
The charm Lixue is referring to in panel 2 is Sea Within Veins Prana and normally it makes poison instead of acid but since I though that might be difficult for the comic I switched it to acid since it is a bit more visual. Kimbery is as closely linked to acid as she is poison (if not more so), so I didn't think it was too much of a stretch. Plus customized charms are not uncommon in Exalted so I hope you'll forgive this breach of the official charm list. All of Kimbery's Charms can be found in the Broken Winged Crane.
Exalted game, characters, setting, Caste Symbols and concepts are property of White Wolf Publishing,
and the artist makes no claim to them. Keychain of Creation-exclusive characters and artwork, are property of Padraig O Ruanai. If you enjoy this comic please go read Keychain of Creation. [link]