Well, not sure this actually qualifies as a speed sculpt but that was the original intention. lol. This took about a day and a half, I was having fun with it and didn't want to call it done without a certain level of polish there.
The concept is from the creaturebox guys: "Greg Baldwin" and David Guertin". I tried to lookup who specifically made this one, but its actually really hard to figure that out for some reason. lol. Here is a link to their website for those interested. Incredibly inspiring work all over the place there. http://creaturebox.com/gallery/
I recorded the entire process here and condensed it down to a little over an hour. I'm also going to put this up on the artstation marketplace with all the source files, a downloadable version of the sculpting video, time stamps, marmoset files... Everything really, and I'm giving it away free as a thank you for anyone that supports my artwork. Here is the link for the source file content: https://www.artstation.com/marketplace/p/p2Rk/free-creaturebox-fanart-source-files-educational-purposes
Sculpted in Zbrush and polypainted. Auto retopologized the main mesh and uv'd via polygroup in zbrush. Rendered in the fancy new Shiny Marmoset 4.
I had a lot of fun with this one, hope you all like it!