Concept by Seth Kleinerman. Implementation by Aaron Dinkin.
Each puzzle answer in this round contains exactly one three-letter substring consisting of the letters A, C, G, and/or U (and no other A, C, G, T, or Us). These are the symbols for the nucleotides of RNA, and any triple of them represents an amino acid, each of which also has a standard one-letter symbol. In order across the map:
ECUADOR CUA leucine L DEBAUCHERY AUC isoleucine I ACADEMIES ACA threonine T MACGYVER ACG threonine T CUCKOO CUC leucine L LOLLYGAG GAG glutamic acid E UUCP UUC phenylalanine F KAUAI AUA isoleucine I ISAAC AAC asparagine N REGGAE GGA glycine G KIERKEGAARD GAA glutamic acid E OLYMPICGAMES CGA arginine R
Reading off the amino acid symbols in the order in which the puzzles appear on the map spells out the Brain's password, LITTLE FINGER (which is, of course, a synonym for Pinky).
When teams tried to meet with the Brain, they found a plush Brain with a piece of paper, which contained the meta-meta.