I'm not really sure what series spider-man I used as a base figure or for the extra arms either. I drilled tiny holes in his side by hand using a very small drill bit to insure that the arms wouldn't fall out while still keeping all of the articulation in the arms. I repainted the blue part of his suit (cuz all the arms didn't match) but I left the red part alone. It took the lives of two spideys to make the one(sacrifices must be made for the greater good). Hope you like it,thank you.