"A bull is drawn on it in purple. It was on the desk in the document room."
One of two keys needed for the Louise Puzzle
Document Room, 1F Brookhaven Hospital
Silent Hill 2
The "Purple Bull" Key is found in the document room on the first floor of Brookhaven Hospital in Silent Hill 2. It can be retrieved after reading a doctor's journal. It isn't shaped like a normal key, but rather a key card or a token. The key is one of two needed to open the Louise Puzzle box found on a bed in Room S14 on the third floor of the hospital.