UCHUU NO KISHI TEKKAMAN BLADE: TWIN BLOOD

Twin Blood is an alternate version of Blade and Evil's first battle, with drastically different character and mecha designs from the rest of the series. Blade/D-Boy does not need Pegas to transform and the armor more closely resembles the Radam humanoids from Tekkaman Blade II. — Description from AniList community (anilist.co).