At least Kuja's reaction is a lot funnier than what Frisk had been expecting, and they can't help but to snicker a little before clamping down on their tongue. They pat him on shoulder, smiling wryly. "Their, their. Don't worry about it. Never really occurred to me I'd need to tell people, because it wasn't a thing that needed telling on my world. Soooo it's not entirely your fault. I mean, all the general thickheadedness and overthinking is totally on you, but not entirely," they tease, although there's no maliciousness in their voice. "And yeah, it's the same thing for Chara. And the other Frisk. Have you met them yet?"