I just skimmed a few youtube videos and only got his first name Ah-rin-zay
I'm guessing the last name is pronounced Oh-noo-ah-koo
Yeah, I would say Uh-rin-zay Oh-noo-ay-koo/Oh-noo-ah-ko. Depends on the way his language pronounces the "a" before the "ku" in Onuaku.
Either way, his introduction will sound awesome: