Whose picture is on the US 1000000 dollar bill?

No one's picture is on a US million dollar bill because that denomination doesn't exist. Any "million dollar" bills you may see are well-known novelty items that sell for a few bucks online and in gift shops.

The largest bill printed for circulation was worth $10,000, and the largest bills ever printed were a set of special $100,000 gold certificates made for internal bank transfers.