^I'm thinking that that belt was the shell of the belt 004 and Banno used to make Gold Drive's belt.
066 was the one killed at the beginning by the Police
013 was the the shinigami roimude who got kicked around by Banno. 013, 022, 080(I think?) got killed by the 3 Riders.
The love comedy, and Brain's disguises were hilarious.
Looks like both Medic and Brain got their human forms on the night of the global freeze
The name of the human Brain had copied is Kineta Mitsuharu and he was part of the central information bureau.
The roidmude really take on a lot of the aspects of the human they copy. But I wonder about those who copy more than one human...