Egg Lancer

The Egg Lancer is the Temple Guardian of Adabat and the final day boss before Dark Gaia. Like the Egg Beetle it is also an arachnid, in fact, in the bestiary in the 360/PS3 version it mentions the Egg Lancer is simply a combination of leftover parts from the Egg Beetle and Egg Devil Ray. This boss is fought after completing Adabat Day.

Boss Guide
The strategies between the two versions are quite different, but for both, the Egg Lancer changes its attack pattern based on where you are on the track.

Wii/PS2
It starts out by shooting missiles that leave a pillar of fire. Dodge it as you collect rings and if you can, hit it with a boost. Then, it will follow the track up and the track will run sideways, with the camera focused above Sonic. The Egg Lancer remains behind the floor and fires lasers that move in a zigzag pattern. Avoid them. Then, the floor ends at a rock face and the Egg Lancer will appear in front of Sonic. It will slam the rock wall and rocks will come tumbling down. Steer clear of them. Alternatively, you can run right underneath its claws, miraculously not get hurt, and then a rock will hit the Egg Lancer and its claws will open. If you are in range, boost into it to damage it. Then, the path will curve down and Sonic will fall on to the track below it. On this track, the camera will zoom overhead, and the Egg Lancer will proceed with the same strategy he used with Egg Devil Ray (for help with this section, click the link). You can hit it up to two times in this part. After this part, you have to do a QTE to jump along the pads, and if you are successful, you will take off about half of its life. After this part, you will fall through a hole and end up at the beginning and the Egg Lancer will repeat its strategy.

360/PS3
It starts out by shooting lasers on the sides of the arena, then it opens its claws so you can attack it. Then it goes up the path and hide behind the mesh floor. Meanwhile, it shoots a bunch of stationary lasers. Simply Quick Step around them. Then, it will fire two lasers on the sides that close in on you and it will open its claws. Boost into it before you get hit by the lasers. Then, the track will curve downward and Sonic will drop on to a platform below, which is rigged with lasers everywhere. Jump and Quick Step when necessary. After you get past that, the Egg Lancer will fire lasers and open its claws again. Hit it again. Then you will have to do a QTE jump pad section, where the last one is a three button QTE. If you can do this, you will deal massive damage. On the second lap, the Egg Lancer will fire lasers in the middle of the track below. If you stay in the middle, you will actually fall a little to the right. After it is finished, hit it once more. When you follow it back to the mesh wall, it will shoot a line of lasers and the top laser will move forward, and then the next one, and so on. Before the laser in front of you moves forward, Quick Step right. Then, they will move back, starting with the top. Quick Step right when the one behind you moves back. Then, it will release a line of bombs that will move in a similar pattern. Repeat the process with the bombs, then boost into the Egg Lancer. When you fall down to the next platform, it will be littered with fireballs in sort of a checkerboard pattern. Quick Step around them and hit the Egg Lancer again. If you took every oppurtunity to hit it, you should finish it off in the QTE section.