A Kapool-based Gunpla used by Momo, and assembled by her with advice from Koichi Nanase, but she rejected custom plans that are not cute. The kit's custom style focused not on firepower or mobility, but solely on "Kawaii Power".

It has been customized with a cute penguin motif, and contains a mini Kapool, the Petitkapool, making it more adorable. The Kapool's missile launchers have been removed because they weren't so cute, and the unpleasant sharp tips of its iron nails have been rounded off, reducing its attack power. However, its speed and strength/durability have both been greatly improved as a side effect of pursuing ultimate cuteness.

Like its base Gunpla, the Momokapool can transform into a cruising form by retracting its arms and lowering its head, but Momo gave it a more literal name, 'Ball Mode', based on its appearance. The Ball Mode boasts improved cruising capabilities, and can be used for dodging as well as other various ways, including using itself as a kinetic weapon as seen with its 'Rolling Attack'.