The Green Mask! The original character had some guns, a paralyzer pistol and a regular old mask. Kept the guns, but the properties of the mask changed up a bit.
The Green Turtle! Reworked as kind of a turtle-themed Iron Man. The original Green Turtle had a Turtle Plane and a crazy cape, but I've combined them here to make a flying cape of armor and armory. Or... I've just been watching too much Gamera lately.
OH! Check out the return of the first ever Asian-American superhero in Gene Juen Yang and Sonny Liew's upcoming The Shadow Hero trade paperback in July!