These are some of my favorite monsters from the Fiend Factory. I like the comments which tend to catch some of the flaws in the write-ups. The Iron Pig has to be one of my favorites. They were a great to introduce into my campaign. They were disguised in pig skin and my players thought at first (or were led to believe) that they were some kind of zombie pig. The grell just looked cool.
The Hook Horror was never one of my favorites but the Githyanki were an instant favorite.