Master Hate is an abstract cosmic being who embodies hatred. His true origins or how he came to exist is a mystery. Master Hate first appeared to humans when he joined forces with other cosmic entities in order to stop Thanos, who had gained control of the Infinity Gauntlet. Among those cosmic entities was his counterpart Mistress Love. During the battle that ensued Thanos managed to turn the cosmic beings into statues. However, when Nebula gained control of the gauntlet, the entities were restored to their true forms and attacked Nebula hoping to steal the gauntlet from her. Nebula, however, gained too much power and stopped the entities once more. Later during the battle, Adam Warlock managed to gain control of the gauntlet and set reality straight.
Master Hate is a Marvel comics character, created by Jim Starlin and George Perez. Master Hate's first appearance is in Infinity Gauntlet #3. There is some inconsistency as far as Master Hate's gender, with ambiguity with it, some appearances portraying Master Hate as female, and some as male. Ultimately as Master Hate is an abstract and conceptual being with no actual gender, one can dismiss such inconsistencies as superficial.
Major Story Arcs
Warlock and the Infinity Gauntlet
Another meeting of cosmic entities was called in order to decide if Warlock would be able to keep the gauntlet. Master Hate and Mistress Love attended the hearing and watched the outcome. The gauntlet was split up into the original Infinity Gems. After the hearing Hate parted ways with Love.
Love or Hate
Soon Mistress Love came into contact with a girl who had fallen in love with the Silver Surfer and granted her cosmic powers in order to be his equal. In doing so Love created Avatar, who would be Love's new avatar. However Master Hate watched from a distance and offered Avatar more power if she became his newest avatar as well. She accepted and became even more powerful. Avatar then confronted the Surfer and tried to force him to love her. However the Surfer was able to subdue her and place her in a pocket dimension. There she still waits for Master Hate and Mistress Love.
Heart of the Universe
Some time later, Thanos again gained immense cosmic power when he took control of the Heart of the Infinites. Hate, alongside other cosmic entities again battled him, but to no avail. The band of cosmic entities was soon waylaid by Thanos' might. Victorious, Thanos destroyed the universe. But, he had a change of heart and recreated it and everyone in it, including Master Hate. Master Hate's current whereabouts are unknown
Powers and Abilities
A conceptual abstract entity, Master Hate possesses incalculable strength, incalculable durability, incalculable speed and numerous incalculable traits. Master Hate is the embodiment of hate in the Universe. Master Hate can inspire and ingrain varying levels of hate into any sentient being to various effect. Master Hate is virtually invulnerable to injury, and as a universal constant, Master Hate is near impossible to destroy.