Hooktail

Hooktail is the first boss of Paper Mario: The Thousand-Year Door. She is a gigantic red dragon who was once the Shadow Queen's pet. She has two older brothers named Gloomtail and Bonetail. Of the three dragons, she is the only one who has a castle. Her HP is 20, her attack power is 5, and her defense is 1. Once she ate a cricket and got food poisoning off it, causing her to have an extreme hatred of crickets, and feel woozy every time hearing a cricket chirp.

Hooktail enjoys eating Koopas. She killed Professor Kolorado's father and ate Koops's father, Koopley (though he survived). Mario found a badge that sounded like a cricket and fought Hooktail. Her attacks included stomping and breathing fire. With Mario's attacks sounding like a cricket, her attack power went down, and her defense dropped to zero. When her HP reached zero, she tried to trick him by offering him a thousand coins. (If Mario accepts, she will bite him). She then ate the Toads in the audience to restore half her HP. The remainder of the fight took place in the audience, where Hooktail was defeated. Before dying, Hooktail coughed up Koopley and the Crystal Star.

It is implied in Chapter 1 that Hooktail is a male dragon, given that most Koopas refer to her as "him" or "he". However, when Mario fights Gloomtail, he refers to Hooktail as his precious younger sister.

Hooktail is one of four enemies who eats or absorbs the audience members. The other three are Cortez (who eats their souls to replenish his HP), Lord Crump's robot Magnus Von Grapple (who sucks them in and uses them for ammunition), and the Shadow Queen (who absorbs them to heal all her HP).

Her name might come from Valoo, a dragon from Legend of Zelda: The Wind Waker, who looks similar to him, and whose tail looks similar to a hook.