Nighthawk is an adult, male stealth archaeopteryx living in the hollow mountain with the Hattori Clan and Masanari Black Flowers. He often serves as a mount to top agents of the MBF for transportation. He is especially skilled in stealth and speed, making him ideal for covert missions. He has very short legs and is mostly active at night. His plumage is dark brown and displays cryptic colouration mimicing tree bark, which allows him to camouflage during the day. He also has two stripes of white along his pointed wings.
- His name derives from the bird of the same name.