@Yin_Xiao-long
Genius-level Intellect: When Mechagodzilla was powered by the energy from the Hollow Earth, the robot was possessed by Ghidorah's consciousness, severing its neural link with its pilot, Ren Serizawa. Under Ghidorah's influence, Mechagodzilla killed its own creators, and it effectively utilizes its new body and abilities to overpower Godzilla.
Skilled Combatant: Mechagodzilla is a highly skilled combatant, being able to perform a variety of punches, kicks, and grapples during its fight with Godzilla and Kong both simultaneously, despite being outnumbered. Its combat skills also extend to the usage of weapons for the robot to use during its battle with the two Titans.
Stealth: Despite its prodigious size, Mechagodzilla is shown to be stealthy, being able to sneak up on Walter Simmons without being noticed after it was taken over by Ghidorah's consciousness.
Energy Punch: Mechagodzilla could supercharge its fists with an unknown blue energy to maximize the amount of damage his punches caused. These specific strikes were powerful enough to knock down and disorient Godzilla.
Hollow Earth Energy: Mechagodzilla was able to use energy from the Hollow Earth by charging it into its hands and feet, allowing it to perform devastating hits on Godzilla and Kong and This energy is what give Mechagodzilla the strength to be able to fight Godzilla. Jared Krichevsky calls these "plasma punches".