70793 Skull Basher is a 72 piece BIONICLEset that was released in summer 2015. It features the titular Skull Basher, as well as Onua’s Golden Mask of Earth, which is being drained of its power.
This is a description taken from LEGO.com. Do not modify it.
Press the trigger for bashing battle action with Skull Basher!
Stand guard at the gate to the Temple of Creation with the mighty Skull Basher! This fearsome warrior, created by Skull Grinder, is armed with 2 giant hook axes and is ready to use them to intercept anyone who tries to get in. Press the trigger on its back to activate the battle bash function and chop off invaders’ masks. LEGO® BIONICLE® heroes must not underestimate this brute’s awesome power!
Features a Bull Skull Mask and mask pop-off trigger, shell with cool metallic-effect chest decoration, trigger-activated battle bash function, 2 hook axes, silver-colored bones, translucent rib cage and posable joints