Throughout Adventure Time, there was always some danger lurking around the corner for the heroes Finn and Jake to vanquish. That said, the villains in question varied in terms of the threat level posed. Some were small nuisances that were quickly taken care of, while others were nearly unstoppable foes the duo wasn't always prepared for.
Source：https://www.cbr.com/adventure-time-finn-jake-dangerous-villains/
