This is how Luigi should look in the SNES version of Mario is Missing. Some poses are custom, like the front/back walk, dying sprite, and the jump. Credit goes to Black Squirrel for the colours (and painstakingly going through the rest of my submissions ...
Many Shyguys in the new game Yoshi's Island DS style! Also comes with a small build-your-own Shyguy (using parts from my custom sprites). Toadgui ripped the original red Shyguy, and Sonik made General Guy's hat.