The season focuses on the misadventures of Gumball Watterson, a blue 12-year-old cat, along with his adopted brother, Darwin, a 10-year-old goldfish. Together, they cause mischief among their family, as well as with the wide array of students at Elmore Junior High, where they attend middle school. In a behind-the-scenes video documenting the production of the second season, creator Ben Bocquelet expanded on the development of some of the characters, and how they are based on interactions from his childhood.

When Papi, Chloe, the pups, Uncle Pedro, and their owners move to a hotel, the smallest pup Rosa feels like she doesn't fit in, and Papi wants to make her feel better by showing her how special she is.

《少年正义联盟》为美国DC漫画巨头下的作品。讲述的是第16宇宙空间（DC英雄背景的空间理论，认为宇宙是由多个平行空间组成的，其中有一个为主宇宙）中的地球上，诞生了新的少年版正义联盟，附属于正义联盟，同时接受英雄们的指导和帮助迅速成长的故事