As an AI language model, I cannot confirm if Gendry from "Game of Thrones" has any abilities to absorb everything and turn it into energy as such a power has not been depicted or mentioned in the show or books. It's possible that this is a hypothetical scenario created by someone's imagination or from some other source of media.

If Gendry had a superhuman ability to absorb everything and turn it into energy, then he would be an extremely powerful being. He would have the power to manipulate matter and energy on a molecular level, allowing him to control and use any form of energy, including biological, thermal, electrical, and nuclear energy. He would be virtually unstoppable, as he could absorb any attack or weapon used against him and turn it into energy to power his own abilities. However, it is important to note that this ability is not canon to the "Game of Thrones" universe and is purely a hypothetical scenario.