A　flexible　actuator,　which　can　convert　external　stimuli　to　mechanical　motion,　is　an　essential　component　of　every　soft　robot　and　determines　its　performance.　As　a　novel　two-dimensional　material,　MXene　has　been　used　to　fabricate　flexible　actuators　due　to　its　excellent　physical　properties.　Although　MXene-based　actuators　exhibit　excellent　actuation　performance,　their　bending　deformation　is　solely　due　to　the　in-plane　isotropy　of　the　MXene　film,　and　an　MXene　torsional　actuator　has　not　been　reported.　This　study　presents　a　flexible　torsional　actuator　based　on　an　MXene-carbon　nanotube　(CNT)-paraffin　wax　(PW)　film.　In　this　actuator,　the　MXene　thin　film　acts　as　a　light　absorption　layer　with　wavelength　selectivity,　superaligned　CNT　provides　structural　anisotropy　for　the　composite　film,　and　PW　acts　as　the　active　layer.　The　chirality　and　helical　structure　of　the　actuator　could　be　tuned　by　the　orientation　of　the　CNT　film.　Such　an　actuator　delivers　excellent　actuation　performance,　including　high　work　density　(similar　to　1.2　J/cm3),　low　triggering　power　(77　mW/cm2),　high　rotational　speed　(320　degrees/s),　long　lifetime　(30,000　cycles),　and　wavelength　selectivity.　Inspired　by　vines,　we　used　the　torsional　actuator　as　a　spiral　grabber,　which　lifted　an　object　that　weighs　20　times　more　than　the　actuator.　The　high-performance　torsional　actuator　would　be　potentially　used　as　a　noncontact　sensor,　rotary　motor,　and　grabbing　tool　in　the　soft　robot　system.