The Toppat Clan (also known as Toppats) is a group of criminals and international thieves.
Infiltrating the Airship
The clan is known for wearing top hats and their huge Airship. When the government captured Henry, he had to infiltrate said airship in Infiltrating the Airship. They store all of their top hats in large boxes on board and are an enemy of the government, most likely because of the number crimes they commit.
Fleeing the Complex
The clan also plays a role in the next game, Fleeing the Complex. One scenario involves Henry contacting them to bust him out of The Wall, clearly continuing from the "Rapidly Promoted Executive" ending of the previous game, but the Toppat Leader betrays Henry, Resulting in the "The Betrayed" ending.
There are over 1000 members in the clan, but just few of them are known: