There was never any Coldsteel sprite out there that really captured the original feel so I took it upon myself to make one.

The original Coldsteel is an obvious parody tracing a Super Smash Bros Brawl render in Microsoft Paint, so that's exactly what I did myself.

To replicate the style perfectly I traced Super Smash Bros Sonic renders and used the pixel brush size 2 for the main drawing and pixel brush size 1 for small detail and accessories, while only being able to use Microsoft Paint colors.

Credit:

Three of the poses are the Super Smash Bros renders Sonic appeared in all the way from Brawl to Ultimate.

The Smash Melee one comes from a mod that added Sonic to the game. https://gamebanana.com/mods/328644

And the Smash 64 pose was an artwork by this user linked here. https://www.deviantart.com/sopebockz/art/Smash-Remix-Sonic-906638532

I will not be claiming this sprite for myself and will allow anyone to use it once I publicly release it, as it is obviously traced on purpose.