Demi Human: The events at the end of the game reveal that Yohn, Walter's demi-human companion, is Kyril's mother, and his brave actions in defeating Iskas open a portal that allow her (and a revived Walter) to return to her world.
But Now I Must Go: He eventually leaves on a journey without his friends after the story ends later on in his life.
You Killed My Father: His father, Walter, was turned into a fish monster by the pirate Steele's deadly Rune Cannon. He rushes to help his father, but the now hostile Walter is necessarily killed by Andarc to save Kyril's life.
Heroic BSOD: These tragic events leave Kyril numb with shock and he is unable to fight properly. Gameplay wise, his special attacks must be re-learnt and he is unable to fully kill fish monster enemies. This state lasts until the chapters of the game set 2 years after Suikoden IV, when Kyril is 5 years older.
Dramatic Irony: Late in the game, Kyril kills a fishman to defend Corselia, finally overcoming the mental block that's prevented him from doing so in the past, only to realize he just slew her father, mirroring the trauma that caused said mental block in the first place.
Painful Transformation: He is necessarily killed by Andarc to protect Kyril, having been transformed into a raging fish monster by the pirate Steele's Rune Cannon.
Ascend to a Higher Plane of Existence: Following Iskas's destruction, he tells Kyril the truth about his existence, and asked him to come with into Yohn's world. Kyril refused, and so he and Yohn went into her world together alone, at peace.
The Engineer: He is a particularly talented engineer and an expert on Rune Cannons.
The Fettered: He believes in responsibility, honor, and justice.
Mysterious Past: This unravels towards the end of the game. It is revealed she was summoned from the World of Emptiness, the same world where the Giant Tree (the source of all rune cannon ammunition) came from. She was stuck in the world, unable to communicate outside of her home.
Rebellious Princess: She goes on the run from her family, having witnessed Iskas seducing her mother Miranda away, and trying to kidnap her. Her family were all still unaware of Iskas's trickery and blame Kyril for kidnapping her.
Fantastic Science: Given an Alger Doll and a Wizened Arm, he is finally able to conduct an experiment that reveals the true nature of the Evil Eyes. They create a temporary portal to the World of Emptiness, in which humans cannot exist, and are thus turned into fish monsters, an irreversible process.
Mysterious Past: He seems to be old friends with Jeane, which is an intriguing connection, given the similarities in their seemingly eternally youthful appearances.
New Game+: She is only playable once the game is completed all the way through once, and the player opts to start a new game.
Side Quest: Her speciality. She runs the Middleport Quest Guild, where players can take part in a huge variety of missions, ranging from simple fetch and carry affairs, all the way up to multi-leveled, epic battle maps.
Waif-Fu: She is an expert in martial arts, despite being very petite.
This Is Unforgivable: He finally puts his foot down when the corrupt Heinz plans to kidnap Corselia for Scarlet Moon's gain. He parts company with Heinz completely and stays with Kyril, agreeing that the Rune Cannons and the Evil Eye should be destroyed.
Pirate: Of the Type 1 unwashed, looting brute variety.
Taking You with Me: He was confronted ship to ship by Edgar and Brandeau, along Walter and his team. Steele was defeated by them, but used his Rune of Punishment one last time, killing Edgar, along with himself.
Evil Plan: His is the leader of the Kooluk Patriarchal Faction. He feels it is unfair that the Faction does all the work in Kooluk, but he cannot have overall rule simply because he does not have Royal blood. Therefore, he decides to plan a sophisticated coup d'etat, and gain power for himself.
Fantastic Science: To help with this evil scheme, he discovers the ability of a modified rune cannon to transform anybody who comes near it into a fish monster, unable to revert back to human form. Thus, he seeks out Rune Cannons wherever he can.
Manipulative Bastard: When he fails to kidnap Corselia to advance his plan, he frames Kyril as her kidnapper, which sends the powerful Royal family afer Kyril's party, allowing him to quietly pursue his goals.
One-Winged Angel: During the final battle, he transforms himself into a giant fish monster, before being defeated. Finally.