Yeah, the empty soul is actually why his HP was originally half of what an average humans would be, if we go by in-game standards. Where Frisk had 20 HP, Chris's empty soul could only hold 10.

Description: | Name: Chris Deadman | Age: 19 | Species: Human | LV: 1 | HP: 15 | ATK: 10 | DEF: 25010 (10 normally, Locket boosts it by 25000) | Quiet, analytical, not very expressive, confirmed psychopath | Asexual, panromantic | Nothing special, really. But maybe he'll be worth something to someone. | Ambient Theme: https://www.youtube.com/watch?v=1mCg9oGvVk0 | Battle Theme: https://www.youtube.com/watch?v=0Muucyonpxo \\Lovely sprite made by the equally lovely Derp!\\