Evi

They killed the kings of Midyan along with the others who were slain - Evi, Rekem, Tzur, Hur and Reva, the five kings of Midyan. They also killed Bil'am the son of B'or with the sword.

all the cities of the plateau - all the kingdom of Sichon king of the Emori, who ruled in Heshbon. Moshe defeated him with the chiefs of Midyan, along with Evi, Rekem, Tzur, Hur and Reva the princes of Sichon who lived in the land.