To making himself to a stronger Ryder tired to split himself(One with dominant and recessive) unlike Crono when removing his corrupted side only to be taken and made into Zando, Ryder had a plan to make himself into someone deadly

After stealing and make friends with some Bio-Predators and other species he succeed on Splitting himself into 2. Ryder changed his look and name to Regi and let Ryder is weaker side to cover for him were he can continue to make himself stronger and deadlier

Now, going by the name of Regi The Ruthless in his word the "True" side of Ryder now lives without limits want has far as he did to get what he wants without anyone to stop him

As for Ryder himself even though similar to his past self but this time no more unending rage, fear, and selfish is now gone and he can finally do what he wanted was right.