The Crimson Ogre Mushroom Batch is a 'monster drop' that was introduced during the Ratboy's Nightmare Update. It is one of the many collectibles that are needed by the players in order to complete the entries of the Itempedia of the Nightmare. The Crimson Ogre Mushroom Batch can be obtained as a possible drop from the Crimson Ogre or the Gold Ogre.
In appearance, the Crimson Ogre Mushroom Batch is a batch of crimson Ogre Mushrooms. The stem possesses a black-purplish hue instead of the beige colors seen on the stems of the Gold Ogre and Poison Ogre Mushroom Batches. Its cap possesses a red hue, speckled with black-purplish spots seen on the sides and top of the cap.
Players may trade in the Crimson Ogre Mushroom Batch to the Gargoyle while making a deal with the NPC, which is collectively known as the Gargoyle's Deals. However, this can only be traded in if and only the deal is available throughout the servers, as one deal can only appear each real-life day.
- The adjective 'crimson' refers to the Ogre Mushrooms and its crimson colors, not to be mixed up with the specimens of the Ogres.
- It is simply a reskinned and reused model of the Boomba Mushroom.
- The Crimson Ogre Mushroom Batch's other counterparts are the Gold Ogre Mushroom Batch and the Poison Ogre Mushroom Batch.