The book/comic version of him is what we SHOULD'VE got in the movie. The only good scene of dialogue is when he's first introduced talking to the green spider (can't remember it's name)
Is IT just me or does he look like a cross between TDKR Bane and Shao Kahn? Fun fact: I first watched the Bionicle trilogy from TheShadowedOne1 and in the thumbnail he putted Sidorak and my expectation where quite high for this character until I watched the movie.
The reason Sidorak was barely developed as smart and brutal is because the film makers wanted to focus on other plot priorities and Roodaka took that as she was the central villain trying to free Teridax. The only way to fix that is if the film was about 2 hours and 20 mins long to give a handful of characters (Hopefully Sidorak has that too) enough screentime and smartass traits, the same reason goes for Tuma and other Bara Magnians for The Legend Reborn
