Characters in Adventurers of the Lost word can came from both Our World or from the Lost world and their adventures begin when these two meet.
The character creation process is just as presented in the DCC RPG rulebook with just a few adjustments. Zero level occupations are determined using one of the two tables that will feature in the supplement. If the characters hail from Our World, they use the first table. But if they are native to the Lost World, they will use the specific table for that place.
The character classes presented in the character chapter are also divided in two groups. Our World Classes are for character that come from Our World and have more modern like roles. Characters that hail from the Lost World can, at the judges approval, use those classes, or normal DCC classes (since they are more primitive) and the racial classes presented on the Lost World. As usual, zero level characters with non human races have to take the corresponding non human character class.