- "Somehow lazier than the average Gronckle, this big lug loves to sniff the flowers, and generally relax all day. Too bad his allergies cause lava sneezes!"
- ―Dragons: Rise of Berk
Yawnckle is a typical appearing Gronckle with a color base of bright green. His under belly is a dusty rose color. Yawnkle's wing membranes are a rich yellow with orange edging. His larger skin nobs are white with yellow speckles. He has blue eyes.
According to the Dragons: Rise of Berk official description, Yawnckle is seen as a very lazy Gronckle, more so than typical Gronckles. This may mean he naps most of the time. He also loves sniffing flowers, most likely enjoying a nice Spring day. However, Yawnckle also has allergies - possibly to pollen - causing him to sneeze lava inadvertently.
Yawnckle was an exclusive dragon available after finding all the flowers in the "Spring Flower Hunt" in May of 2017.
- It is the first dragon whose name begins with the letter Y.
- Its name is a twist between the words "Yawn" and "Gronckle".
- It has the personality of a Hotburple.