All of the Robot Master sprites thus far. The two new ones are Desert Man and Blaze Man.
Desert Man: Desert Man's stage takes place in a desert on sunset. It's full of quicksand, Cactri, and Totem Towers, meaning you'll want to watch your step.
Much like Flood Man, a large part of Desert Man's attack pattern comes courtesy of the layout of the boss room. Here's a diagram:
http://item.slide.com/r/1/113/i/szWM...9B-YqTICtMsns/ He starts the battle by going into the quicksand. He'll appear on either side (chosen at random) and fire a shot in your direction. He can do this anywhere between 1 and 6 times (also chosen at random). Then, he'll go to the middle of the stage and shoot the quicksand up in a stream in an attempt to push you into the spikes (which you can use to your advantage by getting under the platforms and sniping him). Afterwards, he'll run around and shoot at you for a bit before repeating the process. His weakness is Ghost Blast.
From Desert Man, you get Sand Storm, a Rain Flush-esque weapon used to attack all enemies on screen, and even paralyze some. It is the weakness of Blaze Man.
Blaze Man Blaze Man's stage is an oil refinery. It's very trap-ridden, requiring precision time for some parts. Think of a mix of Fire Man's stage and Grenade Man's stage.
Blaze Man's main move is jumping around the stage, leaving fire puddles in his wake. He will also "Flame On", so to speak. Much like Heat Man, he's invincible during this phase. While flaming on, he can attack one of two ways. He can throw fireballs from his head in increments of 3, doing 1-4 sets. The fireballs will stay on the ground as they dissipate, adding to the challenge. He can also throw his fiery shield at you, which can be very difficult to dodge due to it's height. His weakness is the Sand Storm.
Blaze Man has a unique relationship with some of the weapons. For example, using Flood Nozzle will heal him completely, along with immediately causing him to flame on. If he's already flamed, then he'll throw the fire at you. Using Neon Spark on him will cause him to stop whatever he's doing, but it won't harm him. It pretty much does exactly what Quick Man's immunity weapons do to him.
From Blaze Man, you get Blaze Trail. It's basically Atomic Fire from The Power Fighters. It's strong against is Snow Man, and can also be used to destroy his shield. So, yes, it's a fairly crippling power against him.
Any questions?