Dai Kaiju, code name Carapace.
Dai is Japanese and his background includes Tokyo and Los Angeles. He is Thuban's roommate. Carapace is an exemplar and a GSD case resembling a turtle, and also has a so far unspecified other power.
When first introduced:
- Turtleshell turned to me and smiled. "Well, while we’re waiting, my name’s Derek. They call me ‘Carapice’-"