Percy: Baby

Leo: Boo (he knows you hate it, so he says it on purpose. Classic Leo, huh?)

Jason: Babydoll. Cuz you're so darn cute!

Frank: Sweetie. I can just imagine him saying that word and my heart melts. 😊

Nico: Babe (I thought 'boo' would be rather ironic for this one, but I decided that Nico is in fact not a total cheese ball 😉)