Game description from the publisher:
In order to reinforce the defenses for his base, Doktor Skarov calls upon a formidable gang: The Terror Trio! Come, if you dare!
Guardians' Chronicles: The Terror Trio, an expansion for Guardians' Chronicles, introduces a band of new supervillains who will cause even more trouble for the heroes of Liberty Patrol! This expansion also contains new tiles that add tough challenges to your games and allow you to set Doktor Skarov's base in the heart of a raging volcano or in the icy winter of a polar landscape.