Fenna Otis is Wanda’s wife. Her species is a form of parasitic fungus, that inhabits a non-sapient humanoid known as a dobek. The yellow markings on her host’s head are the points where she is near the surface.
The first splash panel (and the first bare breast). Kind of a punchline to the last strip, but then that’s the beauty of webcomics: the last strip is always right there.