Yellow Desert Zone boss

The Yellow Desert Zone boss is a vehicle that appears in Sonic Blast. It's a mech piloted by Dr.Robotnik to combat Sonic and Knuckles.

Appearance
The Yellow Desert boss is a mech consisting of a capsule similar in style of an Egg Mobile (albeit in a vertical position instead of the usual horizontal one) with a protective glass, yellow edges, two headlights and a red bust. It also got mechanical arms and legs connected to the capsule by red joints, with the large feets having giant red armor on top of them. Its main weapon is a red spear linked to the main control capsule by a cable decorated with a red ribbon. Color-wise, its mostly dark grey with the edges of the protective glass being yellow while the bust, the spear, the ribbon, the joints and the foot armor are red. It also got the usual Egg Mobile style yellow and black stripes on the sides of the mech.

Powers and abilities
Robotnik's mech got the power to materialize under itself a cloud solid enough to support it and to be used as the way of transportation for the mech. Its spear can be used quickly with the mechanical hands to attack foes.

Sonic Blast
In Sonic Blast, Dr. Robotnik used this vehicle to attack Sonic and Knuckles when the duo was passing through Yellow Desert Zone. In spite of Robotnik's efforts though, his vehicle got destroyed by the two heroes in the end.

Battle
The Yellow Desert Zone boss is the second boss of Sonic Blast. The player fights it at the end of Green Hill Zone Act 3.

Boss Guide
When the player arrive in a wide empty area in the caves of Yellow Desert Act 3, the screen will start pushing the player into the actual, still empty, battle area. Dr. Robotnik will arrives at the right corner of the screen, waiting for some seconds before slowly going off-screen. He'll then swiftly move all the way to the left side of the screen, using his spear to pick the ground in a diagonal way (at the bottom-left of his position) until being off-screen again. He'll reappear on the left side of the area, restarting the whole process over again (albeit from the opposite position each time) until he is defeated.

This boss needs to be hit 12 times. However, these hits must be dealt precisely into the protective glass of the Yellow Desert Zone boss. Trying to hit this boss vehicle from any other spot will simply bounce the player back without dealing any damage (especially below the protective glass when he's picking since this bounce the player right into the spear's pattern). Hitting him when he doesn't move at all will cause him to come off-screen sooner to execute his picking move afterward.

After being defeated, the Yellow Desert Zone boss will blow up before disappearing in a flash of white, clearing the Act.

Trivia

 * The boss of this zone is a reference to Sun Wukong, a character from the Chinese epic Journey to the West.
 * The mechanical hands of this boss only have four fingers instead of the usual five.