ONA
Description
Carl is a significant antagonist in the anime special "That Time I Got Reincarnated as a Slime: Visions of Coleus". He appears outwardly as an old friend and collaborator of Aslan, the second prince of the Kingdom of Coleus, but this relationship is a deception. His true identity is that of a high-ranking demon general, known as an Archdemon, who is over one hundred years old. Carl serves as a subordinate to the original Violet, a powerful demon lord, and works alongside another Archdemon named Gustav, who poses as the court physician.
Carl is manipulative and calculating, using his false friendship with Prince Aslan to subtly influence events from the shadows. His primary motivation is to further a sinister plot orchestrated by the Archdemons to manifest their god, using Princess Zenobia as a vessel. To this end, Carl and Gustav scheme to turn the two princes against each other, aiming to deepen the conflict over the succession to the throne and plunge the kingdom into chaos. While Gustav physically afflicts Zenobia with a curse-like illness, Carl works behind the scenes to control the flow of information and push the princes toward open conflict.
In the story of "Visions of Coleus", Carl plays the role of a hidden enemy. He and Gustav are the masterminds responsible for the escalating crisis in the kingdom. When the protagonist Rimuru Tempest begins to unravel their plot, Carl takes direct action. He is capable of deploying powerful magical barriers, using one in an attempt to trap Rimuru and his allies. After their scheme is exposed and thwarted, Carl and Gustav attempt to destroy the evidence of their conspiracy. However, their partnership ends in a brutal betrayal, as Gustav absorbs Carl, body and soul, to fulfill the final purpose of their plan. This act marks the end of Carl's development, as he is ultimately consumed by his own ally and does not survive the events of the special. His notable abilities include those typical of an Archdemon, such as high-level magic, the creation of barriers, and the capacity to deceive and manipulate others over a long period.
Carl is manipulative and calculating, using his false friendship with Prince Aslan to subtly influence events from the shadows. His primary motivation is to further a sinister plot orchestrated by the Archdemons to manifest their god, using Princess Zenobia as a vessel. To this end, Carl and Gustav scheme to turn the two princes against each other, aiming to deepen the conflict over the succession to the throne and plunge the kingdom into chaos. While Gustav physically afflicts Zenobia with a curse-like illness, Carl works behind the scenes to control the flow of information and push the princes toward open conflict.
In the story of "Visions of Coleus", Carl plays the role of a hidden enemy. He and Gustav are the masterminds responsible for the escalating crisis in the kingdom. When the protagonist Rimuru Tempest begins to unravel their plot, Carl takes direct action. He is capable of deploying powerful magical barriers, using one in an attempt to trap Rimuru and his allies. After their scheme is exposed and thwarted, Carl and Gustav attempt to destroy the evidence of their conspiracy. However, their partnership ends in a brutal betrayal, as Gustav absorbs Carl, body and soul, to fulfill the final purpose of their plan. This act marks the end of Carl's development, as he is ultimately consumed by his own ally and does not survive the events of the special. His notable abilities include those typical of an Archdemon, such as high-level magic, the creation of barriers, and the capacity to deceive and manipulate others over a long period.