@hell0philip It's as an above poster said: The 'Build' in Build Tiger's name doesn't just refer to his construction theme. It also refers to the term 'body builder', possibly inherited from one of his components, which is the reason behind his nigh-constant flexing.
While he might not have actual muscle tissue, he has the spirit, and the spirit is truth and giveth life. Flex on, fighting robot. Flex on. (Narrator also strikes a pose)
@Clawshrimpy It's been fan-subbed, actually. ;) Perhaps they were still working on it back when you wrote that comment, but eventually some people fan-subbed the whole BP series. :D