The Sisters of Juliet are a group of Clockwork Cherub.
The Sisters of Juliet are the bootleg Clockwork Cherub (not strictly speaking part of the Crew of the Copper-Colored Cupids) which were created when Juliet-178 decided to duplicate herself to spread out her workload during a punitive assignment. Although all broadly resemble the original Juliet and share her memories, the increasingly inaccurate materials used in their construction and progressive data corruption as the memories were copypasted over and over mean that they tend to develop their own quirks.
At any rate, since all of the Sisters of Juliet wished to live the life of the original and wouldn't stop fighting with each other for that privilege, they were temporarily exiled to an asteroid in Dimension-1579, ordered to stay there until they'd worked it out. In the meantime, they provide an interesting practical case of the newly-minted Department of Cupid Psychology.
Behind the scenes
The Sisters of Juliet first appeared in The Labors of Juliet (2019).