One of the very rare female Destrons, Esmeryl (エスメラル, e-su-me-ra-ru) is the wife of the Destrons leader Deathsaurus. She presumably has a similar alternate mode, as her robot mode bears more than a passing resemblance to her husband's. She has had at least 28 children with him so far
Esmeryl and Lyzack both show up to show the Cybertrons just what it is Deathsaurus and his crew have been fighting for all this time: their poor female counterparts and countless children back home. This spares the Destrons' lives in the final battle between the two forces.