"If my head were any harder, you could use it as a cannonball."
- Ace Pilot
- Adorably Precocious Child
- Badass Adorable
- Batman-Gambit / Indy Ploy: His plan to escape from the pirates and the military by catching on to the collapsing train rails, counting on the chance that Sheeta's crystal will save them.
- Big Eater
- Boisterous Bruiser
- Bonding Over Missing Parents: With Sheeta, obviously.
- Break the Haughty: He takes Muska's money, somewhat realizing it's wrong. Cue Dola rubbing it in his face, resulting in a short Heroic BSOD.
- Cassandra Truth: The existence of Laputa, even more so for his father.
- Children Are Innocent
- Chronic Hero Syndrome: In the climax, where he refuses to leave Sheeta alone even though it could mean a swift resolution of Muska's entire gamut. Muska plays him like a fiddle because of this.
- Clear Their Name: He is trying to clear his father's, who was ridiculed for his belief in Laputa.
- Conveniently an Orphan
- Determinator: In his quest to find Laputa. Up until the moment he takes Muska's bribe, of course - but after he gets in with Dola's gang, it comes right back up.
- Didn't Think This Through: His escape plan from the mines.
- Generation Xerox: Not unlike his dad, he builds flying machines and has an obsession with Laputa.
- Hard Head: The reason he doesn't get any lasting injuries from his fall early in the movie.
- Heroic Sacrifice: With Sheeta in the end, saying the spell knowing it'll most likely end in his death. It doesn't though.
- Honor Before Reason
- Jumped at the Call: "Are you kidding? This is the most exciting thing that's ever happened to me."
- Nerves of Steel
- Official Couple: With Sheeta.
- Parental Abandonment: There is no mention of his mother. His father was implied to have been Driven to Suicide because people kept saying he was lying about seeing Laputa.
- Puppy Love: With Sheeta.
: Keiko Yokozawa (JP), Lara Cody (US '89), Anna Paquin
(US '03), Ester Sjögren (SV)
Voiced by: Kotoe Hatsui (JP), Rachel Vanowen (US '89), Cloris Leachman (US '03), Annica Smedius (SV)
"Oh, well, ya can't be a sensitive woman like me without learnin' a few things."
Voiced by: Minori Terada (JP), Jeff Winkless (US '89), Mark Hamill
(US '03), Jakob Stadell (SV)
"Laputa will live. I will return it to life! Laputa's power is the dream of all mankind!"
Voiced by: Fujio Tokita (JP), Ed Mannix (US '89), Richard Dysart (US '03), Johan Hedenberg (SV)