Assassin's Creed Valhalla- Who is RAH CEL'EZE?

Many people were asking a few questions when they saw an Isu computer that took on the look of it's creator. Initially believing it was Shaun Hastings from the future somehow. However, this character is actually tied to a real world person, and there's a specific reason they look like this.

Dark Retro: https://youtube.com/channel/UCPUzTc1AMy4nopW85utYQAA
Dark Shadow: https://youtube.com/channel/UCQ0mAKCFqyfI_y0bESU1Sfg
Darkstrider Mobile!: https://www.youtube.com/channel/UC11CaJxbqP_O_8CTEhNZRhg
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