Sacel is Edmund's grandson, and a talented robot designing apprentice. He is intelligent and can build new robots easily, aiding Scyplo and his companions in battle with machines, and being quite talented in other fields of robotics. He wants to be like his father, and be a famous robot designer in the future. However, when he sees Scyplo and his friends, he joins them to seek Betolpy, having a great sense of justice.
Sacel takes the sarcastic part of his father's personality and mix it with kindness and a warm heart. Still a kid, he likes trapping people and doing tricks, being certainly mischievous. He loves to come up with new designs and make his father proud, though sometimes he wonders if he will really be able to be as good as him.