My hyperfixation brainrot took over, saw this, and go "but Onix isn't even the worst Rock Ground in Red"
.....Just in case you wonder why this is a hyperfixation brainrot, the worst by a large margin is Rhydon
Imagine you are a kid playing your first Pokemon game and you encounter this thing.
A huge cool snake made from rocks.
Looks like a strong pokemon so you catch.
You use it in battle and turns out it sucks.