- When he was still a kid, he was so stubborn, arrogant and impatient. And it seemed that he disliked Calder very much because Calder was adopted by his father.

- At 15, he managed to enter the final round and was qualified to become the Fire Possessor in the Possessors' Inheritor Game that was organized by The Elemental Keeper Organization. He was proud but then at the same time, was really bothered because Calder was also qualified as the Water Possessor. During the night before the official ceremony of the New Possessors,  he dared Calder to fight him but Calder resisted and he became angry. At that time, an Advanced Fire Spirit was going to attack him from behind, but Calder noticed it and grabbed Keegan quickly and pushed him away. As a result, Calder was attacked, and the attack gave a big impact to his Water Element. Thus, Calder was descended from the Water Possessor position, thus giving him a title the Ex-Water Possessor and the new Water Possessor position was given to Maia, one of the Water candidates that had highest water element status after Calder.

- After the incident, Keegan and Calder was separated. Keegan started to get busy with his Possessor job. He still had the unpleasant attitudes but not too much as he was before. It seemed that those who involved in The Elemental Keeper Organization were trained to control and keep away their bad attitudes such as stubborn, arrogant, impatience, bad tempered and etc. And not only that, it looked like Calder was the reason too that made Keegan changed....

- He met Calder again after about 5 years. Calder then was requested by the administration of Elemental Keeper to become Keegan's assistant (not that Elemental Assistant position) because Calder got a special ability that can give advantage to Keegan's work. Starting from that, the long hidden chain between them is getting shorter.... 

- It seems that Keegan keeps blaming himself for what had happened to Calder.. and always wondering what Calder thinks of him after they met again...