Spongebob Sqaurepants is an cartoon were Mr. Crabs and Plankton used to be best friends but they turned against each other and now hate each other. It connects to the play by how they used to be friends like Caesar and Brutus but then Brutus betrayed Caesar.
Here is a picture of Bryan McCann in a Yankees uniform he betrayed the braves fans and left to go play for the Yankees after so many years of playing for the braves. This connects like how Brutus betrayed Caesar.