Ketu in association with Moon can make a person very psychic which can be used to heal others, but it can also prompt the person to practice dark forces of nature like black magic and other unholy occult practices. It can make a person an extreme paranoid and can even make him a mass murderer (like Hitler) Ketu in association with Mars, will intensify the Martian energy either in positive or in negative ways. This is the most fiery and combustible combination between two planets. In the mundane level it had led to world war in the past. This combination shows that the person had been working with the Martian energy in previous lives. In the positive aspect the person has Martian talent and potential which he must apply in his present life for constructive purposes. It gives piercing instinct and power of intense concentration. The Key characteristic of Mars is logic and that of Ketu is intensity.