Z Sabre

From Homestar Runner Wiki

The 20X6 Coach Z first appeared in the Scrolling Shooter Games Menu. If you pick up the green "Z" power pill, your ship turns into a Coach Z styled fighter, and the game-describing avatar becomes the 20X6 version of Coach Z. A mysterious figure seen in Stinkoman 20X6's Level 5, 6, 7 and 8 cutscenes bears a strong resemblance to 20X6 Coach Z.

Like modern-day Coach Z, he has no visible mouth. However, he does have more expressive eyes. His body seems to be much larger than normal Coach Z.