Yuusha Exkaiser is the first installment in the Brave series, an anime franchise produced by Sunrise. It aired in 1990 and marked the beginning of a series of mecha anime focused on themes of heroism and bravery. The story follows brave warriors who transform into vehicles and machines to protect Earth from alien threats. Known for its action-packed sequences and engaging plot, Yuusha Exkaiser set the standard for subsequent entries in the Brave series.