- This is a historical Japanese name; the family name is Amon.
Ryu ga Gotoku Ishin!Edit
Sakamoto Ryoma meets Amon after completing the final Battle Dungeon stage, assuming he has already beaten the other Battle Dungeon stages and completed all the game's substories. Ryoma first fights Amon, along with a number of shadow warriors, who bestow abilities such as health regeneration upon him. After being defeated for the first time, Amon challenges Ryoma to a one-on-one fight at Kiyomizudera temple. This fight is the true superboss fight, as Ryoma does not have the benefit of his soldier card abilities. After winning, Amon gives Ryoma the "Enchanted Sword that Time Forgot". This can be upgraded to the most powerful sword in the game, the "Yumeryusai", but only after defeating 100 enemies using the lacklustre Enchanted Sword that Time Forgot.
- Aviator sunglasses were not actually developed until nearly 70 years after Ryu ga Gotoku Ishin! is set.