All of the stages were designed by me, which includes Skullman's, Fireman's, and Woodman's.
Weapons will be included, you would press D, D, and one attack button, which makes you switch the power set. The weapons have been decided, but not exactly coded into the template, but the combination is.
The idea is to use Skullman's gatling implemented into his ribcage, as he was said to have in the manga. The animation will of course be faster in-game. The reason why he's rainbow colored is because he has a smart pallete, for more variation in palletes in the game.
As for the stance and the large portraits, anything can be subject to change for the final game.
Here's an example of what will be in the final sprited version of Skullman.
Newest (fixed ribs), new, and old running on forever.
And finally, his most recent stance, as seen in my signature at Infinity Mugen Team.