- "She would send out a party of their most fearsome and pitiless dragons to destroy Hiccup before he got to Tomorrow: Hellsteethers, Tongue-twisters, Gorebreathers . . . just in case."
- ―Luna's thoughts
- "Gorebreathers, Tongue-twisters, Hellsteethers, his brain told him helpful. Armed with poisonous gases, arm-twisting tongues, jaws that leapt out and get you . . ."
- ―How to Fight a Dragon's Fury
The last passage tells us that Gorebreathers breathe toxic gas (Tongue-twisters twist limbs with their tongues and Hellsteethers have extendable jaws). No other description of abilities or appearance is given.
- How to Fight a Dragon's Fury (Book 12), Cressida Cowell. 2015