Art by: http://www.furaffinity.net/user/boot

Their name is WiFi
The main body goes by Fi and the tail goes by Wi
Fi is blushy and shy and generally doesn't want to hurt anything, Wi on the other hand is a crass rude voremonster who pretty much just wants to eat, all the time

They were designed as a living weapon but Fi didn't want to live up to that role so now they end up spending a lot of time trying to control their appetite and keep Wi in check and away from eating anyone.