As the God of Cleverness, Lucef naturally believes himself to be superior to most other divine beings of… lesser intellect. He prefers to spend his time inventing and discovering over petty arguments and misunderstandings.
When humans were being created, Lucef saw an opportunity to afford greater intelligence to the Gods’ most important creation. When this was discovered, however, the Humans were cast out of Haven and Lucef was condemned by his dull minded brethren.
Seeing how unfairly he and his Humans were being treated, Lucef evened the playing field by teaching Aldam’s wife Evelyn how to harness the power of Souls. When the Elder God discovered this, Lucef was thrown off the Cliff of Fire where he would fall into exile in the Underworld.