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Supporters are Rabbid enemies in Mario + Rabbids Kingdom Battle, identifiable by their backpacks topped with a red siren. As their name implies, they specialize in supporting their teammates by healing them, however they are also able to heal themselves. They can also throw bombs that ignore cover bonuses, destroy Giant Brick Blocks, and although their weapons don't cause large amounts of damage, they do have a high chance to inflict status effects on any character caught in the blast.
There are three Supporter variants, one for each area apart from Ancient Gardens.