Introduce yourself! Here you'll probably want to use a company logo or an image of your team or headquarters. You can pull directly from your camera roll, Facebook account, or Google Drive or Dropbox folder.
How to import images like a pro: http://blog.haikudeck.com/import-images-like-a-pro/
This is a good place to use Haiku Deck's integrated Creative Commons image search. More about that here: http://blog.haikudeck.com/free-photos-for-all-how-haiku-deck-puts-creative-commons-images-at-your-fingertips/
For more inspiration about telling your unique story (including a link to the famous Simon Sinek "Start with Why" talk), this might be helpful: http://blog.haikudeck.com/startup-storytelling-for-the-win/