There were many characters that were comparable to the power system of the Grim Reaper. Naruto: The main character, Naruto Uzumaki, has a power system similar to that of the Grim Reaper. They both have extremely strong spiritual power and physical fitness. 2. Death Note: The main character, Night Goddess Moon, has a power system similar to that of the God of Death. They both have the ability to control death. 3. Corpse Soul World: The Corpse Soul World is one of the main forces of the Death God. Its members all have quite powerful spiritual power and combat skills. One Piece: The protagonist Luffy has rubber fruits that can transform into rubber people with super physical fitness and strength. 5. Metal Alchemist: The main characters Edward Eerrick and Ishida Ryu have similar strength and have powerful spiritual power and alchemy abilities. These are some of the characters that are comparable to the power system of Death. Of course, there are many other excellent anime works that you can choose to watch according to your preferences.