Grond can frequently be found in the Desert, where he ambushes players and enemies alike and fights them - seeking a suitable opponent but due to his immense, cosmic strength he rarely does and soon tires of his "fight" and moves on to find new victims.
Grond is also a frequent target of comedy within the Champions community, with many jokes being made about Grond - similar to the infamous "Chuck Norris" jokes of Barrens Chat in the original World of Warcraft MMORPG.
Sidney Potter was a small-time thug who had a history of bad luck, which resulted in him being locked up for a third time. To get any sort of leniency from the warden and the parole board, Potter decided to volunteer for special medical experiments. However, upon discovering that he was injected with the wrong experimental serum, he went crazy. When some prison guards attempted to subdue him, he was thrown into a shelf full of chemicals, which entered his body through the many cuts by the broken glass beakers. Potter was eventually able to fight his way past the guards and escaped the prison into a rainy night. He dove into a nearby heavily-polluted river, though at the same time lightning struck.
A few days later, a large green-skinned, four-armed monster calling himself "Grond" went on a downtown rampage. Grond was eventually captured and it was determined that the creature was once Sidney Potter, though no one could find a way to transform him back or hold him against his will for a certain amount of time.
In the years following Grond's first appearance, he has attacked sporadically. When confronted, he has proved to be an almost unstoppable destructive force and one of the world's most dangerous superpowered threats and has caused billions of dollars in damage.