Weren't they supposed to be *extra* Characters, not part of the Outcast add-on? There's just 2 Characters - Raoul and Cho.
Only Uxia and Shinobu are mentioned to have missions in Outcast on the kickstarter page (plus the Mirrors fight) and there are missions for those included. Uxia is Page 39-42 and Shinobu is page 43-46 in the Outcast Campaign book.