Marco Johnson is the quaternary antagonist of Sibling Rivalries, and a minor character in Sibling Rivalries: Salvador Real's Adventures. He is a friend of Joel Gonzales, the older brother of Trevor Johnson (by three months), and the younger cousin of James Johnson.
As of the end of Season 3, Marco, his brother, his cousin, and Joel work together to try to get rid of the McReary-Wilson Family, in favor of gaining more power in Wisconsin.
- Sibling Rivalries Pre-Series
- Sibling Rivalries Main Series