It refers to the tri-color national flag.
El Rey is a Hispanic store in Milwaukee
El Rey Theatre was created in 1936.
Live at the El Rey was created in 2004.
Chocolates El Rey was created in 1929.
El Rey Jesus was created in 1996.
Rey Rey Rodriguez goes by ReyRey, and Pepe.
yo soy el rey: I am the king.
El Rey en Londres was created in 1966.
El rey de México was created in 1956.
El rey se divierte was created in 1944.
El rey del tomate was created in 1964.