Piranhacus Giganticus are Big Piranha Plants found in Pipes. They occasionally rise out of the pipes just like a normal Piranha Plant but their larger size makes them harder to avoid. They appear in Super Mario Bros. 3, Super Mario Galaxy 2, New Super Mario Bros. U, New Super Luigi U, Super Mario Maker, and Super Mario Maker for Nintendo 3DS.
- Piranhacus Giganticus' name could possibly be using binomial nomenclature, a scientific way of naming species having the genus name with the first letter capitalized (Piranhacus in this case) and a species name in lowercase (giganticus), both in italics. Which would result in Piranhacus giganticus.