Believe it or not, there are some real lunatics in world football.
Whether you call them 'mercurial enigmas', or just plain 'crazy', you can certainly say that it is these wildcards that help make the game one of the most fascinating sports on the planet.
After all, with all due respect, who wants 22 clones of Gareth Southgate on the field?
Here are a collective of the craziest players in football right now, and the legends whose antics they parallel.
Welcome to the Mental Asylum.