1991 Lampreys: Amphibious Assault Trooper v2 (Sonic Fighters)

Includes: pistol, laser pistol, machine gun, laser rifle, backpack with battery cover

Lampreys v2 is a repaint of the 1985 original. He's pictured with Spearhead's rifle in black.
Lamprey's giant backpack has four buttons and makes four different sounds. Recordings courtesy of ​Tim Dzieciatkowski. ​Have a listen below: 

Here he's pictured with Gnawgahyde's sniper rifle, and Blaster's gun in black.

Here he's pictured with Shockwave's submachine gun in black.