I tried a few times and he doesn't appear enough in the animated cutscenes, and there isn't much artwork of him. One thing that could be tried, if theres a a Dragonball game with great character creation, he could be replicated in there. He basically have a brown saiyan breastplate. If someone send me the screenshot, ill try :) (512x512)
Magus Reference: https://sketchfab.com/3d-models/chrono-trigger-magus-7f6886b4f08847ae81829b02e05e84e9