LEGO Minions The Rise of Gru BrickHeadz are based on the Minions movies. The Minions BrickHeadz sets feature stylized, blocky representations of popular characters such as Gru, Stuart and Otto. They are built using LEGO bricks in a standardized scale and form, with a distinctive squared-off design, large eyes, and a compact, displayable size. BrickHeadz has been particularly popular among adult fans of LEGO (AFOLs) and collectors due to their display-friendly nature, the wide range of characters, and the unique, recognizable style.