There was a great sci-fi book series that I read about experiments with clones (Pratwa?). The lab produced sets of 2 clones that were linked mentally. When they meditated and merged consciousnesses they became a higher being, 2 minds became 1 new different personality.
They all had different weapons... the first attack was done by smiler/slasher clones. There was a scientist/researcher clone for tech.
When merged the sets of clones (5?) merged they met as Ash Oak.
The security team revived an old Pratwa hunter... he later turned out to be a Pratwa who's twin had been killed.
Does anyone know the name of book series?