Iceman is a JLA Martian Manhunter.  His beetle brow and boot cuffs have been trimmed and smoothed, and his right arm has been cut and reattached, rotated 90 degrees, to look like he's launching his ice slide.  His power-dampening belt is sculpted out of Milliput.  I took some artistic liberty and left the etched 'X' on his chest, and boots on his feet, because I thought it looked cool.  If anyone wants to know why I feel this is a necessary modification, e-mail me.  ;)