When Hulk Hogan went to WCW and later TNA outside of his WWE career why he was able to use his Hulk Hogan name ? Even when he did movies he was always "Hulk Hogan" and never Terry Bollea. The Rock had also used his wrestling name in his movies in the earlier half of his movie career but it's only in more recent years he's been known under his actual name Dwayne Johnson. What's up with that ?