Joule's namesake comes from the joule, a unit of measurement in the metric system. It is associated with electrical charges and power, one of the key aspects of the game.
Each of the Sumeragi Swordsmen's personalities and theming are based on the biblical seven deadly sins:
Zonda is one of the few video game characters in existence explicitly stated to be bigender, not transgender. The game's use of xyr, a gender-neutral pronoun, is also a rarity.
Asimov's namesake comes from Isaac Asimov, one of the most famous science fiction writers in the 20th century.
All of the characters in the Sumeragi Group are named after famous car brands, in both the original Japanese and English localization.
Connection to Other Media
During the mission briefing for the supposedly haunted Stratacombs, Zeno will jokingly remind Gunvolt to bring a Proton Pack. Proton Packs were the iconic weapons in Ghostbusters, a famous 1980s movie.
Elise's petrification technique is a nod to Medusa, a creature in Greek mythology. Both figures were female, had snake motifs, could turn enemies into stone via staring, and could be defeated by an opponent looking in the opposite direction.
The Orochi bolt is named after Yamata no Orochi, a major figure in Japanese mythology. The weapon can fire and tag enemies in eight directions, and the legendary creature had eight heads and tails.
The Vasuki bolt is named after one of the King serpents in Hindu and Buddhist mythology.
The Cerberus bolt is named after a creature in Greek mythology. The creature was a three-headed dog, and your weapon can tag up to three targets.
In a nod to the space elevator in the Mega Man X series, the name of the space elevator in this game is also named Babel. Both areas are named after the Tower of Babel, a famous location in the Book of Genesis. The stage description also compares it to the Styx, a river in Greek mythology that formed the boundary between Earth and the Underworld.
The Dullahan bolt is named after a creature in Irish folklore. Both entities are considered powerful and associated with causing immediate death.
The Midas Optic is named after a king in Greek mythology. King Midas turned everything he touched into gold, and your equipment increases the amount of money you earn on missions.
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