Sparks and Spew

Sparks and Spew is a Titan Wing Hideous Zippleback featured in a pictoral short story called "To Tame a Titan", released on Facebook and Tumblr by DreamWorks on October 1, 2014.

Sparks and Spew threaten to damage Berk because the two heads cannot agree what to eat: mountain sheep or fish. Unfortunately Berk is in the way of their argument. The story implies that Titan Wing Zipplebacks may have greater problems deciding what to do; the heads get more independent of each other. Their dilemma is solved by Ruffnut and Tuffnut. They create a 'coin' out of the Titan Zippleback's scale to flip, with waves on one side and a flame on the other. Sparks and Spew seem to understand this concept, and take the coin with them when they leave Berk.

Sparks and Spew appears to be a giant version of Barf and Belch, with little extra horns or spikes.