Meet Taro! He is a dog-like monster who changes in size depending on the emotions he experiences. In this set, Taro is experiencing various intense emotions, and has become quite large - the height of a small building or structure. When he is in this state, he's a bit less in control of his actions and can become somewhat destructive. It'll take awhile after calming down for him to return to normal size.
(art by Floe!)