From the website:
The Masters Addendum brings the series to its conclusion, packed with the goods to fulfill all needs:
New characters and equipment to challenge the shrewdest of players:
Vengeance-filled Boudica, Celtic queen.
Work-allergic Brad, the slacker.
The wily treasure seeker, Dakota.
The duplicating physicist, Dr. Marla Ulf.
Gana, the enigmatic mimic.
Dragon queen Kassina.
High-stakes gambler, Leo Penney.
Test subject Lia Vestri – both of her.
Time agent Lyrra Swan.
Australian outcast, Ned Kelly.
The fire-dwelling Salamander.
Trusted sidekick Sam, the deputy.
Sandman, the urban legend.
Alien timeseer, Seveneyes.
Battle medic, Specialist Njeri.
Massive Xecttyl, the hive mother.
Masters Guide containing the compiled and updated rules set, and packed with a host of bonus material:
New player introduction and tutorial.
Full series character and equipment rosters.
Assembly tournament rules and demo techniques.
Card notes and tough love from the Chief Weewak. Character Crucible, containing 32 revised character and equipment cards.