K

K is the eleventh letter of the alphabet.

Design
K's color is a nearly pure yellow

In Season 2, K's color was darkened in order to make the text easier to read.

Quotes
"What is going on?" (Comic 1)

"NOOOOO" (Comic 8)

"BLABLA" (Comic 44)

Trivia

 * K is the second character to appear in Alphabex.
 * In Comic 40, K's text was darkened, but K wasn't.