Blyke is a normal teenager who, for the most part, minds his own business (unless provoked), but to his friends, he is loyal, protective, and even empathetic as shown when he expressed concern over Remi after her brother died. He may also share Remi's beliefs and outlooks in cripples because he was never bothered by John until he slapped Remi. He can be quite temperamental, however, especially when he argues or fights with Isen. According to Seraphina, Blyke is also open and straight-forward, with no secrets to hide.

After seeing firsthand how the low-tier residents in Branish lived, Blyke began to harbor doubts against society, believing that nobody should be treated in that way.

Blyke also seems to be friendly as he once asked if John (his roommate) would like to walk with him to class. John refused, even though Blyke had no evil intentions.

I believe he would have a medium voice, with a boyish hint to it. Think of Bakugou voice from BoKu No Hero.