The Mud Bud is a pet-summoning item sold by the Zoologist after defeating Plantera. It summons Plantero, a miniature version of Plantera, that follows the player. The pet keeps pace with the player by flying in a manner similar to Plantera's second form.
The Mud Bud is stated to be Redigit's favorite pet item in the game.
The pet looks similar to Plantera's map icon.
The name Plantero could be a portmanteau of Plantera and sombrero, referencing the pet's hat. Alternatively, it could be seen as a masculine equivalent of Plantera, given that the vowel at the end of a word usually indicates its grammatical gender in languages such as Italian or Spanish.
The pet was introduced following a suggestion by a player.