Isaac cries furiously.
Increases the rate of fire of Isaac's Tears by 0.7.
- Contrary to speculation, the item is not a reference to the running gag from Ashens, a popular reviewer of cheap electronics; and is in named purely based on the fact onions can cause you to cry.
- "To those asking: I have no idea what ashens is, the sad onion came about because onions make you cry.." - Edmund Mcmillen
- The Sad Onion was the first item made by Edmund for The Binding of Isaac.