Honestly you really only'd run Hungry Dragon in a dragon deck, and while Pit Lord would be the demon equivalent there are just better demons to run (hell, there are generally better dragons to run). As others have said you're probably better off running Piloted Shredder or what not.
i have both and don't know which one to put in my warlock deck.
Just use piloted shredder.
Honestly you really only'd run Hungry Dragon in a dragon deck, and while Pit Lord would be the demon equivalent there are just better demons to run (hell, there are generally better dragons to run). As others have said you're probably better off running Piloted Shredder or what not.
That's a solid choice. I do prefer DOA or Dark iron in Warlock decks though.