Was checking out some video reviews of Legends Convoy (Optimus Primal) to see how it differentiated from previous uses of the mould.
I have had an original Ultra Beast Wars Primal that I got second hand from my brother years ago and never knew that those little black knobs on his biceps were switches to change what motion the trigger on his back caused the arms to do, until seeing it done in the video review.
I always thought that he only could spin his forearms with that trigger. my mind was blown. an almost 20 year old figure, that I have had for probably around 16 years and I never knew it