Kirby

Kirby is a cryptid enthusiast who writes for his weekly zine, The Lamplighter, which he uses, due to a partnership between Ned and him, to help promote business for The Cryptonomica.

Amnesty
After learning that the Cryptonomica is under threat of eviction, Kirby gives Ned the idea to save it by writing an article in The Lamplighter about Bigfoot and having Ned fake some footage.

As of The Adventure Zone: Amnesty - Episode 28, Kirby is now the Cryptonomica's main proprietor. He was bequeathed the establishment by Ned as Victoria, the original owner, had originally given it to Ned.

Trivia

 * Kirby really likes RC Cola.
 * According to the Saturday Night Dead poster available as merch in the McElroys' DFTBA store, Kirby's full name is Kirby L. Strand.
 * This is due to the artist's last name being put in place of Kirby's nonexistent last name, as confirmed by the artist on Twitter.
 * As far as canonicity is concerned, this may as well be level 2 canon (spinoff or offshoot material considered canon unless contradicted by the source material).