S1·E93 Bud! The Fateful Twin Stars

Ikki arrives after his battle with Mime, determined not to abandon his brother. Bud, angered at the fraternal bond between Shun and Ikki, begins to attack, saying that compassion is useless. Ikki miraculously blocks Bud's light speed attack before they clash, whereupon Bud's helmet is knocked off, and his face is exactly like Syd's. Bud reveals that Syd is his younger twin brother. Ikki confronts him about not helping his brother, and Bud responds that if Syd dies, he will become the true God Warrior of Zeta, and no longer be a shadow. Ikki attacks, but Bud easily ...