Monocle Boss

The Monocle Boss is the first boss in Red Ball 4 and the boss for Green Hills.

Behavior
Phase 1: For a few seconds at the start of the level, the boss will remain on the right side of the screen, with the player at the left. Then, he'll charge at the player, and his eyes will change to red. When he reaches the other side of the screen or hits the player, he'll stop for a few seconds and breathe heavily. When the player jumps on him(or either touch him) he'll take damage and charge again. If he hits the player during a charge, he'll reverse direction and pant again.

Phase 2: After losing 3 of his 6 boss hearts, he'll go to one side of the screen and jump, shaking the screen when he lands. A regular box will fall from the sky in the middle of the screen, landing on the ground before walking back and forth. When the box is defeated, he'll charge to the other side and jump again, still remaining undamageable. This time, he'll summon 2 boxes, which will patrol back and forth, reversing direction when they hit each other. When these are defeated he'll do it again, this time summoning 2 Ram boxes. When these are defeated he'll enter his third phase.

Phase 3: In the final phase of the fight, the boss will jump and walk back and forth, shaking the ground when he lands, though this time he won't summon anything. If the player rolls under him, he'll reverse direction to follow them, even curving midair. After a certain duration, he'll stop and be damageable. When hit 3 more times, he'll be defeated, ending the level.

Trivia

 * This boss is the only boss that doesn't look anything like the episode-exclusive enemy.
 * The Monocle boss is one of the smallest bosses, tied with the Moon Boss.
 * He's about 1.3x the size of a regular enemy.