What toy is like a Bionicle but starts with the letter g?

A toy that is similar to Bionicle and starts with the letter "G" is "G.I. Joe." While G.I. Joe figures focus more on military themes and characters, both toys involve building and customizing figures, appealing to fans of action and storytelling. Another option could be "Garmadon" from the LEGO Ninjago series, which features buildable figures and similar play patterns.