Meat Castle is a large medieval castle in some Nyntindois games. It really doesn't have much plot significance, and could easily be a side quest. The details are sketchy, and I think that it was just an excuse to use the bad puns (see below).
Sir Loin[]
Sir Loin is one of Meat Castle's finest knights. However, he is nothing more than an intelligent bull wearing a helmet. However, do not let that distract you, as he is dangerous if underestimated.
Burger King[]
Copyrighted restaurants aside, the Burger King is the king of Meat Castle. He usually uses physical attacks, but can use a fire attack (Flame-roasted), and rarely uses his status effects (Condiments), so he is pretty easy. He looks like a giant hamburger with a crown on it.