Onion Knight (Dissidia Final Fantasy Opera Omnia)

From Dissidia Wiki

A quick-witted and clearheaded youth bearing the title of Onion Knight. Chosen by the Crystal to become a warrior, his sole purpose is to put a stop to the wizard Xande and the aftermath of his greed─the Cloud of Darkness. While his over-analytical nature makes him unsure of himself at times, it never clouds his profound sense of righteousness.