They should've definitely used king Arthur or a medieval knight as

Did King Arthur wear metal armor? - Quora

Now, from the producer of PEARL HARBOR and the director of TRAINING DAY . . . experience the extended unrated director's cut of this hard-hitting

King Arthur - The Director's Cut (Widescreen Edition)

There may well have been a King Arthur (maybe in Wales, maybe in Scotland), but is the story of Dagonet completely made up? - Quora

King Arthur: Knight's Tale Vanguard Class Guide - How To Build A Vanguard - Fextralife

Jude Law is one but Tom Hardy isn't: what makes a movie star?, Movies

Feudalism in Europe, Japan & China, Overview & Comparison - Video & Lesson Transcript

They should've definitely used king Arthur or a medieval knight as one of the humans : r/ShuumatsuNoValkyrie

Everyone has heard of King Arthur, but 90% of medieval manuscripts of chivalric and heroic tales have been lost

King Arthur and His Knights Childrens Treasury Vintage Book

30 Day Fantasy Challenge Day 25: King Arthur – The Avocado

Who was the greatest real life medieval knight? - Quora

What is the Arthurian Code of Chivalry? - MythBank

Was plate armor ever painted in the middle ages? Armor of many colors is mentioned in Arthurian legends, but was it real? - Quora