Heckyl is an alien characterized as an exceptionally hazardous and strong . Alongside Snide, Heckyl takes leadership and control of the army and base Sledge left behind. After remembering his past and the existence of the Dark Energem, even before and after Heckyl and Snide are separated, Heckyl's motivation becomes revenge against Lord Arcanon for destroying his home-world, Sentai 6.