These first figures are called Shark Troopers #1. At $10 for a pack of 5, not a bad price. I think they look like Atlanteans or possibly Venusians, depending on your brand of VSF. They also have a Shark troopers #2, which appear to be armed with some sort of projectile thrower. Look for them in the Henchmen section of the site.
here. He's a bit pricier at $3.95, but hey, it's a hero figure, right?