Burger Fortress is a medieval/fantasy themed fast food restaurant in the town of Hazelnut. It is not frequented by the cast as often as Greezy N' Cheezy, but does appear or is mentioned in several episodes.
The restaurant is heavily themed, with exterior and interior spaces, staff uniforms, and menu items all adding to the pseudo-medieval ambiance. The building is made to look like a castle, surrounded by a moat, with the inside decorated like a dining hall.
The staff are dressed as knights and executioners and the staff member taking orders in the episode "Crunch Pod" identifies himself as Sir Helps-A-Lot. An exterior play area contains a slide shaped like a dragon, see-saws shaped like stretching racks, and a "Hovel-Go-Round" merry-go-round. Known menu items include:
- Battering Ram Burgers
- Cool Gruel Porridge-On-A-Stick
- Fortress Franks
- Hot Suet Pie
- Jester Juice
- Moat Shakes
There also appear to be several arcade games inside, including Kung Fu Cyborgz.
In "The Finale", which primarily takes place fifteen years in the future, it is revealed that Burger Fortress is eventually converted into a pawn shop
