Hardcore Defense Corps
The protagonist of the game.
Tarethur's best friend, and fellow mercenary.
- Heroic Sacrifice: Let go of Tarethur's arm to save the latter from being sucked into the Yggdrasil explosion.
- Spell My Name with an "S": Is it Edgar or Edgard?
- Coat Cape: Wears his coat this way
- Katanas Are Just Better: Official art shows him wielding one, and his mecha also uses one.
Nancy Winnie Sevilen
Aylatanya "Ayla" Kiruna
Codename "A", a member of the IOB. She was the target for Hardcore Corps's search & rescue mission.
- Heroic Sacrifice: Pushed a dropship out of the way of a laser shot to ensure the mission's success
- High-Class Glass: Sports one over his left eye.
- Ace Custom: Before Crimson Flame, Vulphaes pilot a red colored Graeme equipped with only a Knife and built-in Vulcan.
- Blood Knight
- Knife Nut: His weapon of choice, seen in both personal combat and his first mecha
- Noble Demon
- Red Oni, Blue Oni: To Tarethur.
Leader of Steel Dawn.