Barf & Belch
Much like the twins who ride them, Barf & Belch spend more time bickering than working in concert.
The only time they do see eye-to-eye, however, is when enjoying a nice display of destruction—usually caused by Ruffnut & Tuffnut!
See more of Barf & Belch in:
Dragons: Race to the Edge
How to Train Your Dragon
How to Train Your Dragon 2
Dragons: Riders of Berk
Dragons: Defenders of Berk
Book of Dragons
Truly a split personality! Barf & Belch are each fiercely independent, yet inextricably linked
Ammonium Nitrate mixed with Anhydrous Hydrazine
In battles, Zipplebacks have the secret ouroboros-like power to bite their own tails and set themselves on fire, taking on the form of a flaming wheel that knocks down their opponents like ten-pins!