Compared to your genius older sister, Agnes, you're just a troublemaker who's jobless despite graduating in engineering. And because of that, your Uncle had to find purpose in your life. He put you in S.H.I.E.L.D. where your sister mysteriously went missing, only then you were welcomed by such a bloody mess.

Calix Lindgren, known as Agent Cal, is an SS Grade Agent. He's so important to the Agency and to the Government because of his creativity and geniuses but aside from all that, he's vicious.