Tusk is mecha that is pink and purple. With a body composed mostly of spheres and a spital tail that represents it's ability of using the Golden Ratio more specifically the Fibonacci spiral. A Fibonacci spiral which approximates the golden spiral, using Fibonacci sequence square sizes up to 34. The spiral is drawn starting from the inner 1×1 square and continues outwards to successively larger squares.
In Berlin, Germany, two portals appeared. Expecting that from the portals would two kaijus appear to attack Earth RA HQ already prepared various tanks. 30 minutes after the portals appearing the two mechanical kaijus name Tusk and Echoes announced for Earth to surrender or their master would destroy Earth, but Atum and Tefnut soon appeared to defeat both kaiju. Tusk and Echoes combined their powers of the Golden Ratio and of the Echo to destroy Atum and Tefnut. Close to destroying both Ultra Crusaders Atum used it's Pillar Blade to cut Tusk's tail and Tefnut destroyed Echoes' mouths. After Echoes being defeated Tusk decided to use it's Auto-Destruction to kill both Ultras and destroy the city, but RA HQ used the Ra Phoenix to destroy Tusk and were successfully destroying both Tusk and saving Berlin.
- Claws: Tusk can use it's claws to punch and pinch it's enemies;
- Eye ball Beams: Tusk's eyeballs can fire beams that can easily melt through buildings.
Golden Ratio Abilities
Golden Ratio Physical Abilities
- Fibonacci Spiraling Tail Slap: Tusk can use it's tail to slap it's enemies;
- Fibonacci's Lock On: Tusk can lock on into it's enemies with the the tip of it's tail making it's attacks to never miss the target. The lock on also effects it's allies attacks;
Golden Ratio Long Ranged Abilities
- Fibonacci's Light Beams: Tusk can fire a Light Beam from the eyes and spheres connected to it's head that has the form of a spiral.
- Tusk's name is based on the song Tusk.