Rex grimaced as he dodged the incoming flames, waiting for Grimlock to pause to charge his flame thrower. Once there was finally an opening he dived, recalling the jetpack just before he crashed onto Grimlock's back, hanging onto the edge of the one of the plates. He reached out a hand, laying his palm flat against the paneling. The metal started glowing with a blue circuit pattern as his nanites infiltrated the machine, accompanied by an increasingly loud thrumming hum. Once he'd made contact, he willed the nanites to shut down the robot.

Come on Come on Come on. WORK. Something was blocking him from getting complete control, but maybe he could at least get him to stop rampaging. Rex changed the command, completely focused on getting something through before he got thrown off again. At least he was pretty sure the dinobot couldn't take a bite out of him from here.