Grand Mam

Grand Mam is a boss battle in the game Kirby: Star Allies, and is fought using the Friend Star ability.

Grand Mam is likely fought by cutting off the rope that's attaching the bombs on her hands together, and setting off the bomb with fire for damage against the boss.

In the latest gameplay footage that is shown, it is seen that normal stars/bullets will not affect Grand Mam and will bounce right off of her because of the armor she's equipped with. This leads to believe that only certain other elemental stars/bullets will work against damaging Grand Mam, or that you'd have to only have to attack at a certain point during the fight for damage.

Grand Mam's design seems to be based off that of the mini-boss from the game Kirby Super Star: Iron Mam, due to similar namings and obvious design choices. Like the bowtie on her head, the spikes on her shoulders, and the extendable arms that she is able to throw around to attack.