Onix, the Rock Snake Pokémon. It tunnels through the ground which shakes when it raises its thunderous roar. It can move the ground at fifty miles per hour.
– Dawn’s Pokedex
Onix is probably best known for being Brock’s signature Pokemon. And for being one of the heaviest Pokemon in Gen I. In FireRed, I chose Charmander for a starter, and I don’t remember having too much problem fighting Brock’s Onix despite its type resistance and tonnes of Defense. I think my Charmeleon had a Steel move, which killed it in two shots, haha.
Personally, while I don’t dislike Onix, I don’t really like it either; I’m not a big fan of Rock types, and less a fan of Rock/Ground type (so many weaknesses). I also don’t like worms, which is what Onix is based on…
For this wallpaper, I had a bit of trouble because Onix is so uniformly coloured, ie his features are mostly drawn by lines. So I had to use lots of outlines to define it.