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Just like with a human’s, KAITO’s body relaxes upon entering stand - by / sleep mode, as having to uphold tension increases toll on the energy reserves he actually recharges by sleeping. This relaxation goes for his whole system, including his voice. As higher vocal parameters increase tension and power on his output, it means the strength of these is automatically brought down as well.  On lower vocal parameters, however, the KAITO V1 voicebank has a higher probability of generating engine noise which very much sounds like added hoarseness / breathiness. This, coupled with the product’s ability to produce a [ heavily ] rolling r ( as testified by e.g. ShinjouP’s Paru Nya and yanagi’s Record of the Red Eyes ) makes that, during stand - by, he might unconsciously start emitting a noise best described as ‘ hhhrrrrrr ‘ . It can be most likened to a mix between a purring cat, a washing machine humming in the background, and, well ... human snoring. At least he doesn’t do it loudly.

Each Vocaloid has had their modules connected to their personal internal server in a process called routing. Routing a Vocaloid to their glass fiber clothing means that, at any time, they can establish an electronic connecting to the clothing, and either download it onto themselves ( see above ) or upload them back to their original location, the module wardrobe. In switching between modules, both of these processes happen simultaneously.  Routing is vital to Vocaloid concerts, since it allows them to change their outfit within the blink of an eye, rather than them having to go backstage to change into it instead. It also allows the Vocaloid to switch between the outfits during songs, such as seen here, as an added ' special effect ' during performances. KAITO V1 originally had acces to all modules up until Project Diva Extend. From Project Diva F on, KAITO V3 became the main singer, and thus was the one in need of the costumes. He was the one given the new modules for those performances, and, for Project Diva F2nd, KAITO V1 was disconnected from several of his old outfits ( such as Drizzle and White Blazer ) as they made their reappearance without him. The ones he's remained routed to are thus Campus, Classic, Christmas, VF Ninja, and both Swimwear and Swimwear V, the latter of which it saddens him it hasn't been taken from him yet. 

[ Getting KAITO to laugh actually isn't that hard, but his laugh comes in several stages. The first and most common is the ' dumb giggle ' , which he'll do at anything he'll find even remotely funny. The best example of what it approximately sounds like can probably be demonstrated with some David Tennant. If he happens to insert ' ww ' ( or longer ) somewhere in his speech / messages, you can be assured that's the accompanying sound he's making. The second stage will sometimes be the first if he's shocked into laughing. In this case he'll stare, blink some, and then completely gloss over the giggling phase to just burst out into a loud laughter that generally involves him throwing his head back into his neck and laughing with little restraint. This stage two tends to be short - lived, though, and for a very simple reason -- stage three. KAITO's natural voice is high and cheerful and bright, but quickly tends to grow a little sharp. For that reason, when speaking, he internally tends to lower the Brightness and Clearness parameters on his voice, so he'll sound a little softer and easier to listen to. Doing this can be a little troublesome when singing, because it has him hitting higher notes less well, but since he doesn't need to reach those when talking, it poses no problem. Unless he's laughing. Stage 3 tends to set in about 5 seconds after stage 2, and, due to the height of his laugh, basically comprises of him completely losing his voice. He'll bury his face in his hands and shudder / jerk with laughter ( and, should he have had tear fluid, he'd DEFINITELY be crying ), but aside from the usual high little hiccup when his voice drops to the lower tone of the cackle, he'll make absolutely no sound. It's neither uncommon for him to just let himself drop to the floor at this point, as his knees tend to go a bit wobbly and his feet unsteady under the hilarity, so many have mistaken his laughing fits for a bout of terrible crying until he peeled his hands away and they saw his face. Particularly stage 2 without shock and oftentimes stage 1 tend to be preceded by stage 0.5, though this isn't necessary -- the plosive splutter, or the snort. He's not above making either, and especially if the humor he's laughing at is more of the teasing variety, they tend to happen a lot. ]

While his V3 is, like many other Vocaloids out there, advanced in his internal and external mimicry of the human form, V1 really is less so. One of the very first serious android productions made to resemble humans, he was, at the time, state-of-the-art, but, as with most technology, quickly became outdated in the span of just a few years. He's best likened to more fluidly moving and realistic version of this type of robot. He thus possesses all facial muscles needed to produce any expression humans are capable of, but he does not have the capacity to cry or produce tear fluid. He also does not bleed when cut or broken: his synthetic skin sits right over his wiring, so that is what will show should he scrape himself open. This means he is neither capable of blushing: there is no underlying redness to his skin that would allow him to do such.  The above video is also because covers a part of robot aesthetics also applicable to him: the use of certain facial structures for different genders. As Crypton has mainly released female voicebanks, therein lies their specialty, and with the upgrade of their VBs from simple programs to corporal forms with voices, they also gained great skill at female body development for androids. Men, however, they were much less apt at. At Rin's and Len's age, the distinction between women and men was much lesser, leaving KAITO to be the only one that needed to get a very definite ' male ' shape. While Crypton's incompetence at actually produced male bodies never got as far as it did in the sprites for the ( early ) Project Diva games ( where reused modelling made for very feminine hips even where they should not be ), it did end up shining through in KAITO's facial built. Despite needing to market him, the company did their best to save expenses on his product due to him initially being deemed a failure, meaning that ( as with Android-F from the video ) they recycled. Thus, aside from subtle differences ( thicker eyebrows, less full and colored lips, etc. ), KAITO V1's facial structure is virtually the same as the then already created MEIKO V1's, as is visible here [ pdf2nd screencap ].  For V3, him being a person completely separate from V1 KAITO [ source ], the skeleton and skull were rebuilt from scratch so as to give him a completely unique appearance at last, a project Crypton now was willing to fund in their belief this model would succeed. V1 might, in looks, thus be more similar to his female counterpart than to his updated ' brother ' .