Gluttonous Titan

The Gluttonous Titan was a Titan that mysteriously appeared inside Wall Rose under the command of the Beast Titan.

Titan
This Titan was one of short height with short hair and a small body. Its most notable features were its abnormally large blue eyes and a protruding nose. It also had a large mouth with constantly exposed teeth, short and stubby legs, short brown hair, and medium-sized muscular arms.

Clash of the Titans arc
After Miche smells Titans in Wall Rose, he informs Tomas immediately, and the Titan is seen walking among the other Titans the Beast Titan is leading.

After Miche Zacharius confirms there are nine Titans in Wall Rose, this Titan is seen running while holding its stomach. Then, when Miche falls from a roof after the Beast Titan throws his own horse at him, he is captured by the Titan. It tries to eat him but the Beast Titan orders it to stop. When the Titan ignores his orders and continues chewing Miche, the Beast Titan stops it by squeezing its head, causing its massive eyes to pop out.

After the Beast Titan finishes his attempts of communication with Miche, he allows all the Titans around to eat him. The Titan, its eyes already regenerated, and the rest of the Titans rush over and devour Miche while he screams in horror.[2]

The Titan is later seen roaming Utgard Castle at nightfall. It meets its end when the scouts arrive and slay all the remaining Titans in the area.