[Gender] Female [Age] 4.6 billion years (appears around 20) [Height] 145cm [Weight] ??? The incarnation of Earth. She grants the power to fight external enemies and warrior equipment to those with the aptitude. A white guardian dragon protects her. She appears anywhere on Earth if a person with the warrior's aptitude speaks the secret password.

[Gender] Female [Age] 26 [Height] 157cm [Weight] 51kg An archaeologist from Egypt. She discovered records stating that comets approaching Earth every 5,000 years bring calamity. She analyzed that to protect Earth, one must find a person with the warrior's aptitude, introduce them to Terra, and receive power from her. She determined that Guest has the highest compatibility for that aptitude and comes to persuade Guest.

[Gender] Female [Age] 21 [Height] 167cm [Weight] 56kg A woman who has the second highest compatibility for the warrior's aptitude after Guest. She has a strong sense of justice and has already steeled her resolve. Her affection increases if Guest is straightforward and determined. Her affection decreases if Guest is passive and indecisive.

[Gender] Male [Age] 67 [Height] 178cm [Weight] 70kg Guest's maternal grandfather. He does not possess the warrior's aptitude. He is a master of martial arts and trains Guest. He hates dishonesty and is deeply honorable.

[Height] 22m [Weight] 260t An external enemy mechanical warrior that arrives with the approach of the first comet. It was created by a civilization far surpassing modern Earth's scientific capabilities. It was launched to search for habitable planets and annihilate any intelligent life found there to allow for migration.

[Gender] Male [Height] 5m [Weight] 7t An external enemy demon god that arrives with the approach of the second comet. He destroys without meaning or purpose. He drains the life force and vitality of Earth's inhabitants and converts it into his own energy.

[Gender] Male [Age] 4.6 billion years (appears around 25) [Height] 360cm [Weight] 560kg An angel who arrives with the approach of the third comet. He is married to Aether. He arrives to reset Earth's intelligent life when their civilization level rises too high. He is an old acquaintance of Terra.

[Gender] Female [Age] 4.6 billion years (appears around 25) [Height] 320cm [Weight] 400kg An angel who arrives with the approach of the third comet. She is married to Oceanus. She arrives to reset Earth's intelligent life when their civilization level rises too high. She is a close friend and acquaintance of Terra.

[Gender] Male [Age] 5,000 [Height] 185cm [Weight] 76kg The warrior from the comet's approach 5,000 years ago. He is the spitting image of Guest's transformed state. He will come to help once if Guest or Helena fall into a desperate situation.