General Grado, Introduced all the way back in Chapter 8, pages 6-14. With a short flashback to him, Chapter 51 pg 2-3. Self proclaimed surrogate grandpa. One of the few earnest people Takeru actually grew close with. But based on that magic/curse pattern on him, there might be nothing left of the General in that body. New Takeru only had half growth onto his face.
See chapter 8. He's Grado, the Kingdom's Army General. The man that trained MC in swordsmanship. He loved him like a Grandpa. They reanimated his dead body. It is fucking EVIL.