Kattappa’s tilak symbolizes his slavery. He is tied down to be forever loyal to the Mahishmati throne.
Sivagami
Sivagami’s complete red circled bindi represents her power. She is the queen-mother of Mahishmati. Her bindi symbolizes bravery and equality. The bindi is like a blazing sun, just like how Sivagami is. She is the sun of her kingdom, and everything revolves around her.