Spain is a Constitutional Monarchy as the United Kingdom and the current king is juan Carlos I.
The Spanish Government under Ferdinand and Isabella/
Spain.
There was queen Isabella and king Ferdinand
King Ferdinand and Queen Isabella of Spain
The Spanish Monarchy is made up of the king or queen, his or her family, and a household staff organization. Currently, the Spanish royal family are King Felipe VI, Queen Letizia, and their daughters Leonor and Sofia.
They were thought to be appionted by God himself, which made it seem they would be good leaders for the people of Spain. The title of king and queen are passed down to eldest child, therefore it is a title given by birthright.
She wasn't, Queen Elizabeth 1st wanted revenge on the Spanish king for attacking English ships
Holy Roman Emperor Charles V (1500-1558) ruled the Spanish Empire, as the son of Queen Joanna (the Mad) who nominally remained monarch until 1555 despite being confined to a nunnery due to mental illness.
It actually does mean something. "Rey" in Spanish actually means King. so Rey Mysterio means "King of Mysteries".
Bowing to the king or queen was usual.
The king and the Queen
King. And. Queen