Avenging Stinger Sentry is found near the Metropolis Metrodome. They look like minions of H.I.V.E., but they are much bigger and actively attack H.I.V.E. minions. Two are spawned when a defeated Avenging Stinger Bomber is interacted with, likely quickly knocking the player out. If the player manages to defeat an Avenging Stinger Sentry, they could interact with it, which spawns one Avenging Stinger Bomber and one Avenging Stinger Sentry. If left alone, an Enraged Vengeance Stinger spawns instead.