In Egyptian mythology, Kebehsenuef, often depicted with the head of a hawk, is associated with protecting the vital organs of the deceased during the mummification process. Among the characteristics you listed, the most fitting for the job of watching over a dead mummy’s vital organs would be the keen eyes of a bird of prey.
This trait signifies heightened observation and vigilance, essential for ensuring the safety and sanctity of the organs, which were believed to be crucial for the deceased's journey to the afterlife. The other characteristics—kindness, ingenuity, and a tendency toward anger—do not align as closely with this particular role in the context of Egyptian mythology.