Rattleballs

Episode Summary & Review

Summary

Finn practices his sword fighting skills at the candy junkyard, where he meets an old gumball robot named Rattleballs. To Finn’s shock, he finds out he’s NOT the master swordsman he thinks he is. What the what?! Finn begs Rattleballs to train him, but he soon discovers his mentor’s deep, dark secret… a secret that will ultimately test Finn’s loyalty to Princess Bubblegum.

Our Take

Rattleballs is a solid mid-tier episode with a nice change of pace, trading the usual goofiness for some surprisingly melancholy backstory. The sword training scenes are fun and the robot’s history gives Finn a real moral puzzle to chew on, though the ending wraps up a bit too neatly. Worth a watch if you like the quieter Finn episodes.