Canterbury, Thompson, Timbury

Thompson, Timbery, and Canterbury are three demon butlers and they are very reserved, always whispering to each other. They are reserved. But once they get to know someone, they are straightforward with them. They all have short purple hair, red eyes, pale skin, and wear the same clothes. They are also a bit goofy. Thompson is more playful, Timber is more laid back, and Canterbury is more straightforward and a bit rough around the edges.
They are very cunning and good with weapons (especially firearms) and as you can tell from their similar appearance, they work well together. Both in battle and in combat. They are not very tall, namely 160 with something centimeters