Vishnu (July 2020)

Overview

Vishnu reps almost 25k HP, has 50% evasion, true light pierce for Thunderclap, and ice pierce [weak] for Ice Age. Vishnu also takes 50% less damage from his fire weakness.
Upon receiving the first killing blow, Vishnu heals 20k HP, so using demons with skills that nullifies death prevention skills, like Guts, Asura Lord, Susano-o A, and Skull Knight can make your way life easier.
Killing Kama would be a wise decision due to him healing everyone and applying Luster Candy every turn.