Dogranio Yaboon

Dogranio Yabon is an alien crime boss and the leader of the Interdimensional Crime Group Gangler. He is 999 years old at the start of the series and seeks to find a successor to lead the Gangler so he may retire.

History
500 years prior to the start of the series, Dogranio formed the Gangler Crime Group.

He at some point seized the Lupin Collection, a set of powerful artifacts assembled by the legendary phantom thief Arsène Lupin, from his descendant, shaming him in the process.

Dogranio later attended his 999th birthday party at the Gangler Mansion, where his bodyguard Destra Majjo had to hold the other Ganglers back to prevent them from swarming him. At the party, Dogranio announced that he intended to retire, shocking the members of the Gangler, and stated that the position of leader of the Gangler would go to whoever could conquer the human world, Earth.