Icella is a the boss of Area 3 in Super Princess Peach Wii. She is a woman with blue skin who wears a large, fluffy, white coat. At first, you enter her lair to make her give you the Koopa Froot but it turns out differently. Kamek made the Thwomp block them, which made them search for the fruit. Kamek was hoping that Icella (who guarded the fruit) would defeat Peach and co.
She attacks by shooting shards of ice, Freezing you until she attacks, and summoning sprites which look similar to Blizzarudus. To defeat her, you must pound her three times to make her dazed. Then you use a fire shot at her. Do this three times to defeat her and win the Koopa Froot.