Masaki
The more vocal member of the Red Impulse team, for obvious reasons. Also the more warm-hearted one.

Oniishi
A very quiet character, especially since Galactors cut out his tongue. He is distant and mistrustful.

Kentaro
A close friend of Nambu, he faked his death and left his son in Nambu's care to pursue his spying activities in Huntwall. Whenever he aches for his abandoned family, he drops in to kick Ken in the butt and call him a worthless good-for-nothing.