In today's Miiverse update for Super Smash Bros. for Wii U., producer Masahiro Sakurai confirmed the appearance of Ghirahim.
Those wanting to play as the Legend of Zelda: Skyward Sword villain may be slightly disappointed as the snake-like, sword wielding Demon Lord has been relegated to Assist Trophy. However, he "conceivably back up Link, too," Sakurai mused. He'll presumably bring a slice of nippy sword action and lounge waggling to the Nintendo all-star brawler this fall. Tasty.
What do you think of Ghirahim's appearance in Super Smash Bros.?