Inhale is King Dedede's neutral B attack. Not to be confused with Kirby's inhale, wherein he gains abilities from others, info from Whobby 08 indicates that Dedede simply spits his victims out.
Although footage and images of Dedede using his inhale have not been released, an image of Kirby using doing so after gaining Dedede's copy ability as well as a stated name for the move have appeared on the Dojo.