Aracias and Tracias  
Hello guys! Here is my new OC. They are golem arcane pony.  
White colour golem pony is Aracias, elder sister. Dark golem pony is Tracias, younger sister. They are not from Equestria, they are the friendship gifts for Equestria from a space elf empire.  
In the starting, both of them are just a golem without thought and personality. Until April Iris gives them a self-learning personality chips into them, they start to learn and choose which personality suit them well and finally becomes the real Aracias and Tracias.  
Although they both are twin sister, but due to build by two different elves (which these two elves are hostile to each other), so both of them are always fighting and challenge each others. But when Twilight and others need help, they will work together and become The Death Sisters.  
Both of them are very respect April Iris and treat April Iris like their big sister.