Ultimate Comics Scorpion, 3 fingers. And I only really followed Ultimate Spidey once Miles took over so if memory serves correct this version is a Parker clone, correct me if I'm wrong.
"Regular" 616 Scorpion. Normal man in a super suit. 5 fingers.
I guess this is some hybrid inspiration version. I LOVE the Spidey characters, but 1, price, so I'll only have a few of these anyway. 2, I love them because I read the comics and I know these characters very well so while I often appreciate XM's spin on the various characters, this is one where some of the artistic choices don't appeal to me as much. The tail with big sections instead of the smaller mechanical coils Scorpion usually has, the mask thing, the fingers...if those elements were different I'd dig this more.