Steven Universe was 12 years old in Season 1.
When the popular animated series Steven Universe first premiered, it was generally accepted that its protagonist, Steven, was approximately 12 years old. This age estimation also applied to other young characters introduced early in the show, such as Connie and Peedee.
The narrative of Steven Universe supports the idea that its characters experience natural aging over the course of the series, indicating that their ages can progress as time passes within the show's timeline.
To summarize Steven's estimated age at the beginning of the series:
| Character | Estimated Age in Season 1 |
|---|---|
| Steven Universe | 12 years old |
