Personally, I've got no idea where to begin when it comes to making a vocaloid. I doubt we'd be able to pull audio files of decent enough quality to make anything usable by isolating samples from game audio - unless someone's already data mined good quality audio of all of Klonoa's lines from Lunatea's Veil? If that's something that exists, I could try looking into it.
Alternatively, if someone with an adorable squeaky voice and good recording equipment wants to throw a playlist of tutorial videos off youtube and all the audio I'll need, it's something I could work on in my spare time. Let's get to work team!