A scientist who developed cybernetic technology for the police force. Taki, however, refused to allow Ichihara to test his works on the Special Security agents. Nevertheless, Ichihara was able to give Raiden a cybernetic exoskeleton. During the final battle, he was killed when his laboratory exploded. (Source: Wikipedia)
Sergei, known most often by his code name D, works for Ajou and is charged with special missions. He is very cold and aggressive, skilled at operating the PPOR robots and follows various military tactics. He also possesses superhuman strength and endurance, as a result of artificial enhancement. He is sometimes seen taking in Gel as a way to retain his strength. (source: Wikipedia)
Sergeo is a young boy from the Amazon, who aids Lupin and the gang. He rides a small wooden fishing boat and uses a spear to hunt fish on the Amazon rivers
A being of the dream world. He has interest in the lives of humans and makes contact with Yumi through dreams.