Is there a demonic figure in the Mohawk nation?

No because we don't believe in good or evil, just that every person has some good in the and our "evil" is what we call mischievous. This is because in our mythology the beginning they're were two twins, they were more "yin and yang" than good versus evil. One was considered what some would call "good". He was always kind and made things that were beautiful and nonviolent, but the other brother would always twist them out of jealousy, though he made poisonous things, he also made some good things, like medicine. The "good" brother also once flew into a rage and killed his grandmother for favouring the other all his life. They are both respected equally, which is a major difference from other cultures.