Origin story
Karuppu is honoured as a warrior guardian who stands at the entrance of the village and the temple, armed with a sword and a whip. In the Tamil and Kerala border traditions he is offered toddy, cigars and rooster sacrifice, and his oracle speaks for the community.
Karuppuswamy is a kaval daivam, a guardian deity of the Dravidian folk tradition, revered as a fierce protector and enforcer of justice. The sword, the whip and the dark form express strength, vigilance and impartial justice, and he is remembered as the friend of the poor and the protector of the faithful.
Source: Wikipedia: Karuppannaswamy — https://en.wikipedia.org/wiki/Karuppannaswamy