Nope, I never seen them before and never even heard of the Boss Fight Studios. I don't keep up with much current product much. They're looking pretty awesome. the sulpting and paint looks dymanic and their name really rocks
It would be very interesting to see how the quality will be as good as they appear when they are actually released. These prototype pics seriously remind Me of SOTA's Street Fighter figures way back and if you know them like I do (look for more on that in the future in a special showcase) then you'll already know the quality of the released product was quite bittersweet to put it very, very mildly
As you know I'm not a fan of crowd funding and stuff because people just submit to redicules high prices as it is bad enought stuff at retail. If you got the room and especially the moolah then good, I'm sure they will be fun but I'd rather get the old figures like you mentioned Acid like Street Sharks & TMNT that I missed out on decades ago that these are clearly inspired by if I had a lot of money but that just isn't the case for Me
They do remind Me of Dinosaucers and a bit Remco's DC Warrior Beasts but really IMO their like a realistic versions of Mattel's Extreme Dinosaurs whom was a spinoff of their wonderful Street Sharks. I checked out their prices at BBTS, $32.99 each. IMO that is still very pricey. Its way out of My price point, I don't know how anybody can pay this for figures especailly the ones by Mattel & Hasbro and pay for other stuff too
However, if you can then do it, they would be fantastic on display I'm sure