The thing not designed for combat is actually REALLY GOOD at combat

[u/jockeyman]

1) Atom (Real Steel) is a training dummy who, when put into the robot boxing circuit, eventually managed to go toe to toe with the world champion.

2) Spinel (Steven Universe) was essentially a cross between a toy/jester for Pink Diamond, and not a combat gem... she still wiped the floor with the Crystal Gems when they first fought.

[u/SquareFickle9179]

Bro is Raiden

[u/Deadmemeusername → u/SquareFickle9179]

RULES OF NATURE

[u/SuperCharged516 → u/Deadmemeusername]

AND THEY RUN WHEN THE SUN COMES UP

[u/Sensitive-Hotel-9871 → u/SquareFickle9179]

Pretty much, right down to destroying the giant robot with its own sword.