SENTINEL TEST ROBOT with Wet Jet Cannon * Water Wars Series * 1997 Marvel Comics X-Men Action Figure & Accessories SENTINEL TEST ROBOT with Wet Jet Cannon * Water Wars Series * 1997 Marvel Comics X-Men Action Figure & Accessories Figure measures approximately 6 inches tall. Includes water cannon weapon. Originally released in 1997 - Retired / Out of production. Ages 5 and up. From Toy Biz