Omega's current body was created, but it mentions in some optional dialogue during the Radz-at-Han part of the Beyond the Rift that it originally was using a production model like all the other Omicrons.

I find the business surrounding the Chi unit curious because its card mentions it possesses a quality that could be essential for the future of the Omicrons and its behavior is described as "irrational" due to it seeking out conflict in disregard of orders. Its death quote about "feeling alive" suggests the thing also had a heart, so perhaps that's what they sought to learn from it.