Nunchaku ("Twin Joined Sticks"; also colloquially called "nunchucks", "numchuks", "nunchukas", "chucks", "chain sticks", "chuka sticks", "karate sticks" and etc.) is a traditional Okinawan martial arts weapon of the Kobudo weapons set.
In Mortal Kombat
The nunchaku is used by Liu Kang and Johnny Cage as their weapon and weapon stances in MK: Deadly Alliance (for Johnny), Deception and Armageddon. The nunchaku being befitting for the former due to his similarities with the martial artist Bruce Lee.
By Mortal Kombat 11, the nunchaku is Liu Kang's primary weapon and is used for a majority of his gameplay. They also appear in an intro, a Victory Pose and during his Fatal Blow. They can be customized in the game’s Kustomization.
In Mortal Kombat Mobile, the Champion’s Nunchaku for Liu Kang appears as an equipment in the Shirai Ryu Tower.