Edge FX was only hired to do scenes where Octavius carries his tentacles. CGI was used for when the tentacles carry Octavius: a 20 ft (6.1 m) high rig held Molina to glide through his surroundings, with CG tentacles added later.[57] The CGI versions were scanned straight from the real ones.[2] However, using the real versions was always preferred to save money,[57] and each scene was always filmed first with Edge FX's creations to see if CGI was truly necessary.