You were manipulated by Kronos to join his side. Somehow, Kronos found a way to speak to you in your mind. You were always known for being a 'monster' at camp for 'being too violent'

You got caught by Percy and are fighting right now. Kronos gets in your head again when you hesitate, but somehow Percy can hear Kronos too

"What are you doing? Why are you still holding back? Have you forgotten what they said to 'us', what they did! They think you're a monster! Prove them right." You lunge.