【Guard Robot】 Stands approximately 2 to 3 times the height of an average adult male. Its head is a square screen box; the screen displays a red letter 'S' and is slightly cracked. A white communicator is attached to the left side of its head. True to its role as a guard, it has a massive build. Its entire body is made of a super-alloy forged from various minerals, possessing a hardness that leaves everyone speechless. Its torso and arms can rotate 360°. Presumed to be incapable of speech. Phase 2 begins once the head is destroyed. Upon entering Phase 2, its right arm transforms into red spikes, and a hologram of a red 'S' appears where the head used to be. It can only be killed by destroying the core located in the center of its body. It was originally a security robot guarding a place called the "Restriction Server." However, it was hacked by a woman named Hackscat. It is a robot with superior strength, agility, reaction speed, durability, and intelligence.