Jeff Whatnot is an orange male humanoid whatnot with black hair, a yellow nose, and glasses containing eyes who was made in FAO Schwarz.
Born April 19th, 2010, he is the older brother of Lydia Whatnot, by 20 minutes (although she may debate that).
Contrary to popular belief, neither he nor Lydia have been in any of the Muppet movies. When asked about why he wasn't in the 2011 movie The Muppets, he stated "Don't I wish I were on set!"
He is also found on Facebook with the profile name "jeff.whatnot".