A robotic squid, Kazuya's Doraemon Research Project. It is primitive compared to the cyberdolls. Rena has a fondness for Ikariya, taking it where she goes. It is probable that Ikariya may be the prototype to Kazuya's AI project in which eventually becomes the Maid Program, the core OS of all Cyberdolls. Kazuya make periodical upgrades to Ikariya throughout the anime. With those upgrades, Ikariya gains his own personality.   (Source: Wikipedia) 

Saotome Kazuya is a computer whiz. One day his friend Nanbara, threatens him with a computer virus. Trying to stop the virus, Kazuya ends up making a special order. May is a cyberdoll that arrives at his door a few minutes later and she is 1/6th the size of a normal person, which makes for many awkward situations. Not to mention the fact Kazuya can't even afford to keep May. Cyberdyne is not satisfied with Kazuya's non-payments and will do anything to retrieve CBD May.
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(Source: Anime News Network)

She is most well known for her role as Gaignun Kukai Jr. from the Xenosaga video game series

She's the sister of another famous Italian voice actress, [Ilaria Latini](https://anilist.co/staff/95766/Ilaria-Latini).

At Kazuya's apartment, a package from Cyberdoll Mami filled with five "Chibi-Cyberdoll Mays" arrives. Later, an accident causes May's personality to go into the five mini-May's, each one receiving a distinct aspect of her personality. Elsewhere, Rena finds a lost child and brings it home.