Enaji

Enaji (エナジー, Enaji) is an insect-like creature that Dr. Kairo created to, Record Battles, collect chakra, blood, and other things he might need.

Overview
Enaji are creature that are based off of the Aburame Clan's Kikaichū, to collect chakra for Dr. Kairo's needs. Though he later continued to advance the creature by studying mosquitos, giving it the ability to take blood from organisms, with a sting that is almost unnoticeable. Along with the blood and Chakra absorption, the bugs can record battles and send them directly to Kairo's computer. Enaji have wings that allow it to travel long distances and there are many different versions and sizes to complete different tasks.

Depending on the size of the Enaji, they are able to carry different items. Kairo also uses these creatures as messengers and even trust the insects to do medical surgeries. The larger the size the more they are able to carry. During the Fourth Shinobi War many Enaji were sent to collect chakra and most of them were smallest Enaji due to the fact they would be less likely to be found.

Due to the fact these creatures have no brains and are creature that just follow instructions, similar to Guruguru, they are not affected by genjutsu including Infinite Tsukuyomi. Before Kairo was trapped in Infinite Tsukuyomi, Dr. Kairo had set the Enaji to retrieve doujutsu eyes they could possibly find and replace it with fake eyes the he created.