Egg X

The Egg X is the seventh and final boss in Sonic Advance, which takes place in the X-Zone. This boss is protected at all times when it isn't attacking, and it has four types of attack:

• By shooting a bomb at the player (with two different angles). Jump to avoid.
• By firing a laser beam at the player. Duck to avoid
• By grabbing the player with a giant hand and then shake their rings away. Jump to avoid.
• By running towards the player.

You can only inflict damage on this boss when Eggman's cockpit is out. You'll have to hit the cockpit eight times (six times if in easy mode).