Larry Wall: Our hero. Overdue for a McArthur prize.
Developers of Perl 6 (and Parrot)
Audry Tang: Started original Perl 6 compiler implementation in Haskell. Ended the Dark Ages of compiler-side Perl 6 development. Spread "-Ofun" and commit bits to the masses. Also overdue for a McArthur prize.
Perl 6 (and Parrot) Testers
Developers using Perl 6 (and Parrot)
Bernhard Schmalhofer: Has been updating PHP on Parrot.
Mark Stosberg: I'm working on porting CGI::Application to Perl 6 and having fun along the way.
Stevan Little: "Moose is the new Perl" Moose meta-object system. Journal.
Andy Lester: Set up the official Perl 6, Perl 5, and Parrot wikis. Started Perlbuzz.
Conrad Schneiker: The instigator of the perl.perl6.users newsgroup, and instigator of the official Perl 6 Wiki (and $1,000 prize for a Perl 6 version). The increasingly unwieldy perl6.users newsgroup FAQ ultimately morphed into the original content for this wiki, with a lot of help from the people at perl.net.au, who originally put it on their wiki.