Critical Role: Vox Machina Origins — Dark Horse Comics
Issue: #4
The sinister Iselda has kidnapped Vax, and Vex must swallow her pride to ask for aid from the other heroes. But when they refuse, Vex decides to retrieve a friend outside of town... but not before Keyleth catches up to her and pledges to help.
Creators: Matthew Mercer, Matthew Colville, Olivia Samson, Chris Northrop
Characters: Grog Strongjaw, Keyleth, Scanlan Shorthalt, Vax'ildan, Vex'ahlia