Hellhound

Hellhound's human past life was full of trauma and neglect. Though he doesn't remember it, he was raised in a cult and had a very abusive family. His pure wrath from it reincarnated him as a hellhound after his death at just 8 years old from ritualistic drowning. Though he doesn't remember his past life, he still has feelings of extreme anger from it.
While most hellhounds spend most of their time in hell, Hellhound spends most of his time on Earth. He doesn't know what makes him feel the need to do this, but he spends most of his time being an omen of death to those who hurt others. He doesn't want to fight, unless it comes to extreme measures, just curse them with an oncoming death. One glance into his eye, and they'll die soon. However, he can control these powers, and only uses them on purpose.
He also guides lost souls into the afterlife. He occasionally guides lost people onto the right path. Those he helps still feel afraid of him, but their fear is mixed with a strange, calm sensation. But mostly, he protects children from those who harm them. Witnessing a child being harmed is tho only time he will start a fight.
His paws are scorching hot, and leave small fires wherever he walks, though these are easily put out by the wind. He is extremely fast and can outrun a cheetah.