Mega-Synthia is a clone that combines the DNA of Pearl Forrester and Synthia (herself a clone of Pearl Forrester). She has blonde hair that she often wear in an unkempt bun, and wears a green outfit similar to Pearl and Synthia's.
Mega-Synthia and Synthia both appeared in a Zoom meeting during Turkey Day '20, during which they tormented Emily Crenshaw, Jonah Heston, Tom Servo, and Crow. She affectionately addressed Synthia as her "clone-sister-mother" and the two of them seemed to enjoy berating the others.
Mega-Synthia seems to be slightly more manic than either Pearl or Synthia. She does not share the dim-wittedness or social awkwardness that Synthia originally displayed.
Behind the Scenes
Mega-Synthia is a character in the Mystery Science Theater 3000 Live - The Great Cheesy Movie Circus Tour in which she acted as the primary antagonist to the crew of the Satellite of Love. She was played by Yvonne Freese.
Mega-Synthia (still played by Yvonne Freese) also appears in promotional bumpers for the MST3K channel on the streaming service Pluto TV. In one of these, she gleefully "denies" that the channel is a covert brain-washing effort. She also has a ring in her right nostril.
- Mega-Synthia is a new character created specifically for the live tour shows. It appears that she now fills the role as the primary "Mad".