From Team Fortress Wiki
The Ghastlierest Gibus (/'gæstliərɛst/ /ˈdʒaɪbəs/ gast-lee-er-est jahy-buhs) is an unlockable headgear, wearable by all classes. It is an upgraded version of the Ghastlier Gibus. The item is very similar to the Ghastlier Gibus, but with the addition of a brown-irised eyeball inside the ripped top of the hat, sitting on a small red platform inside it. The eye is a symbol related to the Very Scary Halloween Special, meant to resemble the boss character in Eyeaduct, MONOCULUS.
Players that had earned the Ghastlier Gibus before the Very Scary Halloween Special update had their Ghastlier Gibus upgraded to a Ghastlierest Gibus.
| Ghastly Gibus Grab|
Dominate a player wearing the Ghastly Gibus to earn your own.
- [Undocumented] The Ghastlierest Gibus was added to the game.
- [Undocumented] Changed Ghastlier Gibus that were obtained before the Very Scary Halloween Special to Ghastlierest Gibus.
- [Undocumented] Added Ghostly style.