1. Ron Perlman as The Lich.
Why he’s here: The Lich, in Pendleton Ward’s own words, embodies absolute evil. He is a major antagonist in the series, perhaps arguably the most powerful foe Finn and Jake have had to face thus far. When he wants something destroyed, he just raises a legion of undead knights, marches in and obliterates it. Dealing with him is series and dangerous business. So it’s really quite apt that we have Perlman,