Juan Julián Merelo
JJ Merelo is a Perl user since 1993. He has used it continously at his day job as professor at the University of Granada, contributed to CPAN since 2001 and participated in two YAPC conferences talking about evolutionary algorithms in Perl and organised YAPC 2015. He's known to engage people who say that other languages are better than Perl, specially those who, besides, think that vim is better than emacs. Recently published a book about Perl 6.