Agent Park

Agent Jin Seon Park (as he is most commonly referred to, although he is no longer an IGR agent) is a crew member of the Iris II following his defection from the Regime. Prior to this, he was the agent in charge of the Rumor crew's case and led a team of IGR agents that eavesdropped on the Rumor (via the Strain H nanoswarm) and made recordings of them in an attempt to apprehend the crew. On the recordings, he was initially referred to as Agent Apollo, and later as Agent Park, Codename: Apollo.

His is typically the first voice heard on the IGR 'recordings', introducing each report and summarising the situation as perceived by the IGR. After he was apprehended and sent to Zone Z, this role was taken over by Agent McCabe (formerly Junior Agent McCabe).

Many in the fandom believed that Park's first name was "Lenny" after he jokingly introduces himself as this to Sana Tripathi during Episode 10. However, this was a reference to the fact that he had been the agent responsible for listening to the Rumor recordings, and was not in fact his real first name. In Mini Episode 1: Airplay, it is revealed that his full name is Jin Seon Park.

Early Life
Little is known about Park's background or life prior to the IGR. He is known to have fought in the war, and he also attended the same third grade class as Roderick Quincy Cresswin Jr. (Ricky Q), as this link was used to accuse Park of being the double agent leaking intelligence to Cresswin Jr, after which he was apprehended and sent to Zone Z.

As he is led away by Major-General Frederick, Park tells Junior Agent McCabe "if Shelly calls, tell her not to expect me". Shelly is generally assumed to be Park's significant other, but she could also be a close family member.

Time as an IGR Agent
Agent Park appears to have initially been the only agent assigned to the case of the Rumor crew (aka "The Strange Case of Starship Iris"), as the case was originally a low priority status (priority five), although other agents helped with transcribing the report and verifying details.

This changes in Episode 4, when Park is assigned a new partner on the case in the form of Junior Agent McCabe, and a new team due to the case's increased priority status. While Park initially seems unenthused by this development (he is described in the script notes for Episode 4 as "Already so done with this"), he later defends his team's competence against criticism from IGR bureaucracy, saying, "Please be advised that my team can be trusted to do their jobs." He also defends Junior Agent McCabe from potential criticism from Major General Frederick, saying, "any departure from regulation reflects on me, not them."

Park's overall manner on the Rumor recordings (up to Episode 7) is deadpan, cynical and unenthusiastic. He only displays strong emotions when defending his team, and when he is taken away by Major General Frederick to Zone Z (though he does his best to remain composed in front of Junior Agent McCabe).

Detention in Zone Z and Defection from the IGR
Agent Park reappears in Episode 10, having been released from Zone Z after the real source of the leaks, the report transcriber (Ensign Best) was apprehended and confessed. He later says that the Republic "just sent [him] back to work" and that he "never even got an apology, because the Republic doesn't make mistakes".

His release is highly unusual, as evidenced by Agent Goodman's disbelieving exclamation of, "Nobody comes back from Zone Z", perhaps making Park the first Agent to return directly to his job after being detained there.

After his return from Zone Z, Park is described as wearing an eyepatch. When McCabe asks what happened to his eye, he replies only that "Zone Z happened." It is more than likely that he was tortured in Zone Z, and may have other injuries; when he returns, Agent Clark expresses confusion as to how he can be walking.

It is later revealed that he turned against the IGR while detained in Zone Z, and was in contact with "an intermediate" who was in contact with the Other Violet Liu. He gave her his password, which allowed the Rumor crew to hack into the security cameras at ADVANCE, disguise their arrival on the planet, and keep tabs on the building evacuation. During the execution of Plan B, Park pretends to shoot Krejjh on Major General Frederick's orders, but it is revealed that he missed on purpose, and is helping the Rumor crew to execute the rest of the plan. When Agent McCabe demands to know when he turned against the IGR, he replies, "When the IGR took my goddamn eyeball."

Park helps to persuade McCabe, who is already branded as a defector thanks to his involvement, to turn against the IGR and assist the Rumor crew in their escape from ADVANCE. They join the others on board the Iris II as it takes off from New Jupiter and officially become members of the crew.