A friend of Karin's from New York, he is an Armenian-American. He was the one who invited Klaris to help out. He is usually cautious with a wait-and-see attitude. Talsian seems to have a connection to Karin's parents, and doesn't talk during their instant message conversations. Talsian makes a physical appearance from halfway through the series. He had actually created two Medusas in secret.
He is the chairman of Atlas Corporation and apparently knows Ryouko well. It is revealed that Talsian and Nagiko, the first CEO of Atlas, both helped create Atlas for a better future for their descendants. He is placed under arrest by Ryouko under allegations of having assisted an unknowing Karin to shut down Atlas' critical systems.
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|Hōjō Kuniko | Hōjō Nagiko | Takehiko | Momoko | Miiko | Yuri Gamagori|
|Naruse Ryōko | Z4 | Kusanagi Kunihito | Hōjō Nagiko | Sergei Talsian|
|Ishida Karin | MEDUSA | Zhang | Klaris Lutz | Sergei Talsian|
|Mikuni | Sayoko | Miiko|
|Broker Trio | Hiruko | Canary|