In honor of St. Patrick's Day - here is my list of the top green super-heroes.
1. Green Lantern
2. The Hulk
3. Green Arrow
4. Green Hornet
5. (tie) She-Hulk (tie) Martian Manhunter (from Justice League)
Honorable mention - Teenage Mutant Ninja Turtles and Green Power Ranger (the Red one is the one who does porn movies now). For villains you'd have the Green Goblin and the Riddler.