The Brain Bucket is a promotional cosmetic item for the Soldier. It is the bucket worn by Buckethead Zombies from the Plants vs. Zombies video game franchise; a dented metal bucket with a narrow trail of dried blood leading up from the rim, speckled by several more droplets on the bucket's handle and body.
- [Undocumented] The Brain Bucket was added to the game files.
- [Undocumented] The Brain Bucket was made tradable, craftable, giftable, and obtainable via random drops.
- [Undocumented] The Brain Bucket was added to the list of hats that can be unusual.
- [Undocumented] Renamed from "Bucket o’ Brains" to "Brain Bucket".
- [Undocumented] Fixed a typo in the description.
- [Undocumented] Added "glasses" equip region.
- The item's description is a parody of the advertising slogan for Kix cereal, "Kid tested, mother approved."
- "Brain bucket" is a slang term for a protective helmet.