Are Elvis dollar bills real

They're as real as Santa Claus bills, Easter Bunny bills, ... i.e. the bill they were made from is real, but the Elvis picture isn't. The only official US product that has ever been printed with a picture of Elvis was a commemorative stamp.

They're novelty items made by taking an ordinary $1 bill and pasting a picture of Elvis (or anyone else) over George Washington's image. If you peel off the Elvis picture you can spend it (as 1 dollar, of course).