* Captain Barnacles: His voice is deep and authoritative, suggesting a seasoned sea captain from the UK. He's often described as having a "salty dog" voice.
* Kwazii: He speaks with a lively, energetic tone, and a slight Caribbean lilt, hinting at his origin as a pirate.
* Peso: His voice is soft-spoken and gentle, reflecting his calm and caring nature as the Octonauts' doctor.
* Tweak: Tweak has a high-pitched, energetic voice, suggesting a playful and enthusiastic personality.
* Shellington: Shellington speaks with a measured, intelligent tone, suggesting his scientific background and likely British origin.
* Dashi: Dashi has a quick-witted, sharp voice, reflecting her adventurous and fearless personality.
* Professor Inkling: His voice is deep and slow, reflecting his wisdom and age. He has a distinct, almost formal way of speaking.
* Barnacle's Dad: He has a deep, gruff voice, suggesting a tough but loving father figure.
* The Octonauts' Crew: The other Octonauts, like the Gup-A Crew, have unique voices that reflect their personalities and roles. They often speak in unison, creating a strong, cohesive team dynamic.
It's important to note that the Octonauts are fictional characters, and their accents are designed to be fun and engaging for children. They don't represent specific real-world accents.