Renton
The son of a military hero and co-pilot of the Nirvash typeZERO. He is a very outgoing and emotional person possessing strong ideals and compassion yet is naive and tends to jump into matters before understanding what's going on.
Eureka
A pale young girl with turquoise hair and lavender eyes and is a pilot of the Nirvash typeZERO. She treats Nirvash not like a mere machine, but as a living being, with consciousness and feelings. However, she can seem distant and awkward to other people - she has trouble communicating with other humans and understanding their feelings. She tends to appear randomly next to people, startling them at times. Initially in the anime, she suffers from frequent headaches, these stop later on, seemingly from the presence of Renton Thurston.
Anemone
The pilot of another Nirvash LFO, typeTheEND. She looks to be about the same age Eureka. Anemone is regularly accompanied by her strange and overweight pet badger, Gulliver. Dewey assigns Dominic to be her caretaker, to monitor her condition as his plans develop.
Dominic Sorel
The youngest to be second lieutenant and Dewey's subordinate. He is assigned to Anemone to tend to her needs and monitor her physical and mental condition. It's never explained why Dominic was promoted so fast, especially given his occasional naivety. There are men in the military far older than him and yet of much lower rank, who often have trouble obeying his orders. Dominic is also aware that commanding officers give him a hard time following his orders for Dewey as they think he's still a kid.