Cybers are immortal and eternal beings. Some were taken and converted a matter of months or years ago. Others might be centuries or even millennia old.
Crucible's been at this for a very, very long time. She's among the ancient Cybers that the Winged Guardians fought against in their earliest days 10,000 years ago. Her power reshapes and controls the inanimate materials around her. The land itself becomes a weapon, and endless armies of minions form out of every floor, wall, and ceiling.
She was one of the architects of the previous Griyadin, and she built many structures and weapons for the Cybers during those days. One of her creations, called Exchikkes, have continued to be one of the most widely produced and iterated types of Constructs in their armies, for thousands upon thousands of years. From the modern era, to the days of ancient Caelestis and Lakraphor, all the way back to Agmoz's conquests, the Exchikkes have gazed indifferently upon their enemies... =<