This one is from a closed species called the Mechomimi, here's some information on them.
Mechomimi- Pocket size protectors of your digital information. With advances in digital technology, mechomimi exists to protect your wireless data from intrusive hacks. These robot like creatures have programable personalities and different parameters based on their task. The have a "ringlet" which determines their power, and a "halo" to determine their task handling. Mechomimis without Halos are unable to be infected by a virus, however they are much slower at dealing with oncoming information and as such tend to be weaker as well. There are Attackers; designed to go after viruses, and Defenders, who shield your information in case of any back door attacks. Lastly there are viruses, which are attackers or defenders who have either become infected, or programmed to go rogue. Mechomimis can be dressed up in clothing, which tends to be more on the modern side, but it is up to the user/owner to decide what they wear if anything.