In the blockbuster Terminator movie franchise, an evil robot morphs into different human forms and objects and oozes through narrow openings, thanks to its “liquid-metal” composition. Although current robots don’t have these capabilities, the technology is getting closer with the development of new liquid metals that can be manipulated in 3-D space with magnets. Reported in ACS Applied Materials & Interfaces, the materials could someday find applications in soft robotics.