The Repel Gel is an item found only in Paper Mario and would later be replaced by the Boo's Sheet in Paper Mario: The Thousand-Year Door. When the Repel Gel is used, it will make Mario invisible for three turns. This will prevent enemies from doing any damage to him while the item is still in effect. It can be dropped by the ? Mark Li'l Oinks or be purchased at the shop in Toad Town.