The same way you write it - rei. Pronunciation RAY-ee.
Rei Chao's birth name is Gonzalo Rei Chao.
Toffer Rei's birth name is Kristoffer Rei Nolasco Tragico.
Rei Sakuma's birth name is Reiko Sakuma.
Rei Dan's birth name is Mayumi Yamazaki.
Rei Nakanishi's birth name is Reiz Nakanishi.
Rei Natsume's birth name is Fujitani, Hiroko.
Marina Rei's birth name is Marina Restuccia.
Evelyn Rei's birth name is Kirsty Anne Symonds.
Alexander Lo Rei's birth name is Luo Chang-An.
Za Rei
REI was created in 1938.
Za-rei