The main character of Infinite Undiscovery. Capell was raised in a troupe of bards and as such is very skilled at playing the flute. At the beginning of the game he has been captured and thrown in prison, though he has no idea why. Shortly after, he gets saved by Aya. It's soon revealed that he looks exactly like the leader of the Liberation Force.
Berserk Button: Insulting or mocking Unblessed is enough to get him angry.
Character Development: While not as obvious as Edward's, Capell stops thinking in terms of survival as the story progresses. At one point at the beginning of the game he says that the Liberation Force is foolish for running into fights, even if it's because they want to do the right thing; when they reach Port Zala, he runs off to break the chain with the same kind of reckless attitude that he had berated earlier.
Chick Magnet: By the end of the game, Aya and Faina are in love with him, and Michelle, Vic and Komachi seem to have a thing for him. Though, at least in Michelle and Komachi's cases, this is because he looks like Sigmund.
Idiot Hero: Not an idiot so much as clueless and uninformed, though one could argue that the latter is due to reasons entirely out of his control. He also gets noticeably more world-weary during his travels and makes less ignorant comments toward the end of the game.
Magic Music: The melodies he plays can do things from just sounding nice to curing vermification.
The Masquerade: Poses as Sigmund after he dies to keep peoples' hope alive.
Mistaken Identity: Everyone thinks he's Sigmund. It's why he's captured in the first place.
Capell's Love Interest, Aya is a fiery and spirited girl who happens to be a princess. She first appears when she comes to save Capell from prison. However, she believed she was saving LordSigmund. Needless to say, she is very displeased when she finds out Capell is not who she thought he was. But she helps him out anyway.
Action Girl: The first thing she does is slit a guard's throat... while doing a back-flip off of him.
A Rebel Leader called 'The Liberator,' Sigmund is the leader of the Liberation Force. He has taken it upon himself to cut the chains binding the moon to the land, and has inspired others to join him. After he gets his Lunaglyph removed, he can no longer break the chains. It also ultimately leads to his death, as he dies protecting Capell. He was once named Volsung, and was the King of Casandra. He's also actually Capell's father, which explains the whole Mistaken Identity thing. When it was discovered that Capell was an Unblessed, Volsung willingly had his lunaglyph removed, which de-aged him.
Badass: He shatters gigantic, moon-binding chains for a living and has earned the respect of pretty much every important person you encounter. His name is known far and wide throughout the world. Hell, one of his titles is Living Legend.
Red Eyes, Take Warning: Though a much more serious and determined person than Capell (at first, anyway), Sigmund averts this in that he is The Hero and, while not exactly a Nice Guy, he's obviously a good man.
A member of the Liberation Force, Edward uses a gigantic sword in battle. While Aya is merely a Tsundere towards Capell, Edward is an outright Jerkass, verbally berating him at every turn. Eventually, he gets turned into a vermiform, goes crazy, and destroys part of a city. Capell manages to cure Edward before the latter dies of excess power. Afterwards, he realizes how ridiculous he was behaving and decides to mellow out.
Never Speak Ill of the Dead: Played with. It's obvious he has great respect for Sigmund, but after the latter's death, Eugene starts to say how foolish and arrogant Sigmund was in life. He's basically the only one who talks about Sigmund as though he was a human.
Older Sidekick: To Sigmund. He mentions in a rather obscure conversation that he's at least nine years older than Sigmund.
Specifically, during one connected conversation between Savio and Eugene, Savio goes on a long spiel about how to temper one's inner power and how not to let yourself overuse your lunaglyph... and then advertises his book. And then Capell and Eugene both respond with Visible Silence.
Freudian Excuse: It's shown that, as a child, he was very jealous of the attention his mother heaped on the de-aged Sigmund. In the same scene, a familiar, evil-looking silhouette can be seen looming over him...
Large Ham: For some bizarre reason, his voice actor seems to be channeling a very self-aware, parodic William Shatner. This leads to many stilted, oddly-enunciated line readings, but on the other hand makes him seem like he's not all there, which gives him an overly-theatrical Mad Scientist kind of vibe.