Robotnik used the Plasma Ray Cannon as part of a trap for Sonic the Hedgehog. The former dictator offered to meet on the Rocky Valley Zone's Sky High Peak for peace talks, but it soon became apparent that Robotnik still wanted to rule over Mobius. He revealed that he was merely a holographic projection, although the gun on the peak was real. It was then fired, completely obliterating itself and the whole top of the mountain. Fortunately, "Sonic" was also a hologram and avoided any harm.