Ultraman Zero (ウルトラマンゼロ, Urutoraman Zero) is a fictional character from the Ultra Series. He first appeared in Mega Monster Battle: Ultra Galaxy before starring in his own film Ultraman Zero: The Revenge of Belial. Lacking a TV series of his own, he became the main navigator of Ultraman Retsuden/Shin Ultraman Retsuden and made guest appearances in subsequent Ultra Series media.