Big Blue Chuchu

The Blue Chuchu makes it's appearance while inside the Temple of Droplets, the fourth dungeon of The Minish Cap. The battle with this Chuchu is won the same as the one you found in the Deepwood Shrine, but this Chuchu is more electrified. Wait until the electricity around the base is short circuited, then attack with the Gust Jar.

Quote from The Legend of Zelda: The Minish Cap Big Blue Chuchu figurine: "Appears in the Temple of Droplets. An ordinary blue Chuchu. Fighting him while Minish-sized is daunting, just try to avoid that electric attack."