Secret Plant Zone Boss
From Sonic Retro
The Secret Plant Zone Boss, found in Secret Plant Zone, is the second boss in Sonic Pocket Adventure. Eggman is in a floating vehicle with two levitating spike equipped panels at his side. He is stationary but the platforms rotate when jumped on. To damage him you must jump from the platforms to hit Eggman on top. He will also try to pelt you with shots from the cannon located in front of his vehicle.