The Casino Street Zone Boss is almost a perfect recreation of Sonic 2's Casino Night boss, with Eggman using a claw machine in a pinball arena. He uses a different method than his previous encounter against Sonic, trying to grab you with the claw and drop you on a set of spikes that rises from the bottom of the arena. After a few hits, he will rise further up the arena and start dropping bombs as he did in the previous fight.
If you thought Eggman's bombs were the pinch mode, you were in for a surprise. Just like the original fight, the claw gets an electric current flowing through the claw, which makes the claw attack far more deadly.