Wayte was once a teenage human mage in training who traveled to Ebott Mountains in search for new magic to learn. In the mountains, he met the Royal Alchemist at the time, D. Gaster Skeleton, who decided to help the young human in his pursuit of magic by teaching him about Monster Magic. In turn for his lessons, Gaster told Wayte to help him in an experiment in bridging the gap between Determination and Monster Magic. Along with the young prince of Ebott, the young mage in training agreed to take his part in the experiment. During the experiment, the two types of magic reacted violently and vaporized both of the test subjects' bodies. While the soul of Asriel vanished, Wayte's soul stayed in the test chamber, completely inert. Gaster decided the experiment was a complete failure, put the remaining soul in a container, and told the Royal Family the bad news about their son. Later in secret, the alchemist put the human soul in a special suit of armor and made him the guardian of one of his later projects, The GATE.

He will based on Freedom Call. Here is his theme: https://www.youtube.com/watch?v=W4XwqXfX7VA