Heidel is a haughty person with a lot of money and connections, who enjoys using his position as a noble to do whatever he wants to. Though seemingly a busy man, he throws extravagant parties on a regular basis. After the Reinford Group was taken over by the provincial army, Roer citizens started showing their dissatisfaction with his inability to run the company, revealing he's not well-respected in the region.
During the October War, the Noble Alliance seized control of the Eisengraf, giving it to him. Heidel kidnapped Irina Reinford and kept her hostage on board the Eisengraf, hiring Nidhoggr jaegers to guard it, so that the chairman role in the Reinford Group was left vacant and he could take it. Publicly, he lies and says Irina is ill and that's why he became acting chairman, taking over the Reinford Group Building's 24th floor, where Irina and her family used to live.
As acting chairman and member of the Noble Alliance, Heidel shut down half of the group's divisions, and forced the other half to make weapons and Soldats for the war, doing the same with other businesses in the city. With these changes, share prices dropped, the group stopped exporting, and the city started receiving fewer tourists and trade, making the citizens unhappy.
After Rean, Alisa, Angelica and the others rescue Irina, they go after Heidel to take the company back. He deploys archaisms all over the building to kill them, not caring about the safety of his employees. Once they reach the top floor, Irina easily knocks him out and the others arrest him. When his brother declares his neutrality in the ongoing war, he takes a leave of absence from his role as Director in the group, and is confined to his mansion due to his crimes.