The 14w03b enhancements to the player skin finally gave me a chance to make an accurate Lion Voltron skin!
The sleeve and pant-leg layers are used for Lion Heads. If you disable any of those, I made it to look like Voltron has fired off the Lion Heads. (This feature comes at the expense of some Z-fighting where the Blue and Yellow Lion Heads meet, but I'm willing to live with it.) The jacket and hat layers should be left on.