The NFL said the person was part of the 400-member field cast and had hidden the flag on himself before the halftime show began Sunday night.

The Grammy-winning rapper performed Drake dis track "Not Like Us," "Squabble Up," "Humble." and "Luther," among others, during football's biggest night.

Kendrick Lamar's halftime performance at Sunday's Super Bowl was the most-watched in history, with more than 133 million people tuning in - and it also may have been the most uncompromising. In a slot that every previous artist has reserved mostly for greatest hits,