In darkness I hide. Master of jutsu and knife. Shing! sound my kunai.

Badge of Honor, Soldier’s Glory, Villain in a Children’s Story, Ghosts from a painful past, Or proof of living? Depends on who you ask.

I dance in the angles where right turns abide, Where the square of the long is the sum of the side. A name lost in centuries, yet still I remain, A theorem unspoken, yet known through the strain.

My first name is a delivery, but not of words, something sent to a doorstep. My last is a surname that echoes ancient stone strongholds. I rap, sing, and blend genres with modern flair. Who am I?

My first name is common, shared by kings and farmers alike. My last is like a leader who governs towns through the ages. I strum and sing with soulful flair. Who am I?