Did you know Hammerhead has an unusual neck paint color variation. Here are 2 Kenner US Hong Kong Figures. Here is comparison of neck colors- notice one a darker brown.
The other variations of Hammerhead include the Off Vein and ON vein type versions.
There is Euro PBP Variant, and an assortment of variants in the directions his eyes are looking.
He can also be found unusually faded out- greenish, not really a variant, but unique.
here are some bagged versions as well
