Hi Hi Puffy AmiYumi (2004) : 3x39

Evil scientist Ami and her assistant Yumi create the perfect manager, "KAZ". When Harmony, their Number 1 villager, gets into their castle, the monster escapes and gets into Harmony's house. When he leaves again, he pushes over a table with candles on it, causing the house to burn down. Harmony gets angry and organizes a mob of villagers to storm the castle. Meanwhile Ami and Yumi are making another monster. They hear the door-bell and, when they open the door, Harmony and two other villagers run into the castle and start to destroy it. Suddenly Kaz comes back and Yumi finds out that he had only been behaving strangely because he could not see. She gives him glasses and then he convinces the villagers that they are not mad scientists, but musicians. To thank Kaz, they make a wife for him. This is the series finale.