Stubborness
Maverick felt like he's defeated. They already manipulated his mind. After he said yes and gave trackers on each of them, the special agents that knows that King Edgar is alive took out the disguise as they put a mask on both oldies so no one would recognize them outside. It went for like an hour since they already prepared it yesterday.
He was eating his breakfast while they are having fun on putting disguise. Even Hardin and Harriet joined in with Caleb. He will be left in the castle while they are having fun outside. The audacity of these people! He wanted to have fun as well, but since Kenzo put a heavy duty on his shoulders, he need to take it seriously. Kenzo is the King and he don't want to be labeled as traitor. He sighed in frustration and stay in the castle, acted like they are still with them.