Sylvia (Puppet Up)

From Muppet Wiki

Sylvia is a sexy teal Whatnot with long black hair, recycled and redressed by Julianne Buescher for Puppet Up!

She is most often performed by Buescher in Improvised Opera games, the most notable being the TBS/Vegas special where Sylvia sang about enjoying her new implants, but wished for another pair upon her back...while Nerd Boy (Victor Yerrid) mumbled with his face in her chest for the finale.